MAGNETIC GRADIENT SURVEY (January 2000)

Transcription

1 REPORT ON 42A01NE GRENFELL Q ^ Q MAGNETIC GRADIENT SURVEY (January 2000) Grenfell Nrth (McCmbe) Grid S Grenfell Nrth (Rbinsn) Grid Grenfell Twnship Larder Lake Mining Divisin Nrth-eastern Ontari NTS 42A/ UTM Grid Zne 17, NAD. 27 Fr Barry McCmbe Dug Rbinsn Graham Rbinsn David Rbinsn Duglas Rbinsn P. Eng.

2 42A01NE GRENFELL 0 10C Dug Rbinsn Cnsulting A. PROJECT LOCATION...4 B. ACCESS...4 C. CLAIMLISTANDCLAIMMAP...4 D. PHYSIOGRAPHY AND VEGITATION... 5 E. DEPOSIT TYPE AND GEOLOGY...5 F. EXPLORATION TARGETS... 5 G. SUMMARY OF PREVIOUS WORK...6 H EXPLORATION WORK...6 Grid...6 Gelgy...6 Ttal Field Magnetic Survey...7 Magnetic Gradient Orientatin Survey...7 Auxiliary Test Data...? Tpgraphy Survey...? MaxMinEM Survey...? I. VERTICAL GRADIENT, TOTAL MAGNETIC FIELD SURVEY...? Ratinal...? Instrumentatin...^ Prcedure...8 Data Presentatin... 9 Observatins...9 J. AUXILARY TEST DATA K. RECOMMENDATIONS L. LIST OF CO-HOLDERS...11 Grenfell Nrth McCmbe Prperty Grenfell Nrth Rbinsn Prperty M. LISTOFREFEENCES...12 CERTIFICATE OF QUALIFICATIONS...13 Grenfell Nrth Magnetic Gradient Survey,

3 Figures Figure l: General Lcatin Map: Scale l: 100,000 Figure 2: Claim Map: Randm Scale Figure 3a: General Gelgy Grenfell Tp: (Map 2060 reduced t 1:50000) Figure 3b: Legend t General Gelgy Grenfell Tp. Figure 4: Cmpilatin Magnetic Ttal Field Features Grenfell Nrth Grid: Scale 1:5000 Figure 5: Surficial Features: Grenfell Nrth Grid: Scale 1:5000 Prfiles Line 200E Vertical Gradient f Ttal Magnetic Field Strength Line3 OOE Vertical Gradient f Ttal Magnetic Field Strength Line 400E Vertical Gradient f Ttal Magnetic Field Strength Line 500E Vertical Gradient f Ttal Magnetic Field Strength Line 600E Vertical Gradient f Ttal Magnetic Field Strength Line 700E Vertical Gradient f Ttal Magnetic Field Strength Line 800E Vertical Gradient f Ttal Magnetic Field Strength Line 900E Vertical Gradient f Ttal Magnetic Field Strength Line 1000E Vertical Gradient f Ttal Magnetic Field Strength Line 1100E Vertical Gradient f Ttal Magnetic Field Strength Line 1200E Vertical Gradient f Ttal Magnetic Field Strength Line 1300E Vertical Gradient f Ttal Magnetic Field Strength Line 300S Vertical Gradient f Ttal Magnetic Field Strength Line 200S Vertical Gradient f Ttal Magnetic Field Strength Line 100S Vertical Gradient f Ttal Magnetic Field Strength Line OOON Vertical Gradient f Ttal Magnetic Field Strength Line 100N Vertical Gradient f Ttal Magnetic Field Strength Line 200N Vertical Gradient f Ttal Magnetic Field Strength Line 300N Vertical Gradient f Ttal Magnetic Field Strength Line 400N Vertical Gradient f Ttal Magnetic Field Strength Line SOON Vertical Gradient f Ttal Magnetic Field Strength Line 600N Vertical Gradient f Ttal Magnetic Field Strength Line 700N Vertical Gradient f Ttal Magnetic Field Strength Line SOON Vertical Gradient f Ttal Magnetic Field Strength Line 900N Vertical Gradient f Ttal Magnetic Field Strength Envimag Specificatins Grenfell Nrth Magnetic Gradient Survey,

4 A. PROJECT LOCATION Grenfell Nrth Grid McCmbe Prperty A Rbinsn Prperty This explratin prperty is lcated 14 km west f Kirkland Lake in the suth central part f Grenfell Twnship (Plan # G-3212) f the Larder Lake Mining Divisin. The grid is lcated at Latitude 48008'00"N and Lngitude 'OO nw (UTM Zne: mN, mE). The reader is referenced t NTS Map Sheets 42A/1 fr the general lcatin f the prperty. Ontari Base Map gives detailed tpgraphic features f the prperty. B. ACCESS The prperty is accessed via Highway 66 leading 14 km west frm Kirkland Lake. Frm this lcatin prceed nrth 6 km n Highway 11. Turn right nt the dirt rad leading 0.3 km. east t the natural gas pipeline. Turn right and prceed 1.2 km suth t line 200N which crss the pipeline (ruff but passable pipeline rad). C. CLAIM LIST AND CLAIM MAP Grenfell Nrth Grid: McCmbe Prperty The McCmbe prperty cmprises a large blck f claims in Grenfell Twnship. Wrk was dne n the fllwing claims units units units units Grenfell Nrth Grid: Rbinsn Prperty The Rbinsn prperty cmprises the fllwing claims in Grenfell Twnship units l units (8 Ha) units l unit (8 Ha) units Grenfell Nrth Magnetic Gradient Survey,

5 D. PHYSIOGRAPHY AND VE CITATION The gridded prtin f the prperty cnsists f apprximately: 40(Mi spruce cvered utcrp 40*^0 spruce tamarack cvered swamp aspen cver clay flatlands aspen, birch and jack pine cvered deep sandy sils. E. DEPOSIT TYPE AND GEOLOGY The prperty lies within Fe and Mg thleiitic basalts f the Kenjevis Grup. Green-grey magnesium thleiitic basalts with lessr dark green magnetic irn thleiitic basalts. The stratigraphy strikes nrth west and dips steeply. This stratigraphy is interrupted by altered auriferus structures including faults, wide pyritic Fe-carbnate-sericite alteratin znes and pyritic quartz veining. Pyritic quartz veins ccur bth within and utside the wide alteratin znes. These structural trends are bth easterly and nrth westerly. The east trending structures are parallel t and part f the structural dmain cntrlled by the Larder Lake Break-Cadillac Break. This structural dmain hsts the gld depsits lcated between Matachewan, Ontari and Val d'or, Quebec including the Kirkland Lake gld camp and the Kerr Addisn Mine. F. EXPLORATION TARGETS Disseminated auriferus sulphides and gld veins are the explratin target. These auriferus sulphides are expected t be hsted within larger alteratin znes including Fecarbnate alteratin, sericitizatin r silicificatin. Gld veins within structural breaks are als targeted. Disseminated auriferus sulphides are expected t be hsted within alteratin including extensive Fe-carbnate alteratin, sericitizatin r silicificatin. The assciated alteratin is expected t have a magnetic signature indicating the destructin f the primary magnetic fabric f the hst rcks. Gld veins within (gelgical) structural breaks are als targeted. The veins are expected t be marked by very weak gephysical signatures. The magnetic surveys seek breaks in the magnetic signature that mark interruptin in lithlgjes acrss the targeted structural breaks. Field mapping, an EM survey, a magnetmeter survey and a gradimeter survey target bth extensive alteratin expected t hst auriferus sulphides and narrw alteratin znes assciated with gld veins. Grenfell Nrth Magnetic Gradient Survey,

6 G. SUMMARY OF PREVIOUS WORK Cmparisn f maps and descriptins indicate cnfusin may exist t the identificatin f the Nrth and Suth shafts in varius reprts examined. Field mapping appears t have cnfirmed the lcatin f these tw shafts. A pssible third unrecrded shaft (r deep pit) was als identified during 1999 field wrk Nrth shaft (first shaft) sunk t 120 ft depth with assays up t 4.84 z/tn acrss a 12 inch quartz vein Nrth Shaft: Tw 3 tn bulk samples taken running 3.11 z/tn, and 2.96 z/tn Au. Prperty acquired by Grenfell-Kirkland Gld Mines Ltd.: develpment n 100 ft level; shear zne (150 feet wide) seen t displace vein east f shaft Nrth shaft extended t 173 ft; drifting 150 ft level 1932 Suth Shaft (inclined) sunk t 70 feet and 50 feet f drifting n narrw quartz stringers Tw ne tn srted samples shipped. First sample l tn cntaining 10 z Au. Secnd sample l tn cntaining 17 z Au tns shipped with n recrd f grade grund magnetic and VLF surveys, drilling and gelgical mapping by Perrn Inc Kinrss drilled tw hles interesting gld values t z Au/tn ver 3.0 feet (0.050/7.0 feet) Perrn Inc. cnducted the nly recrded gelgical mapping in the Kirkland Lake Resident Gelgist's assessment files. This mapping utlined utcrp areas nly. N detail is recrded except the rck type. H EXPLORATION WORK Grid A square grid was cut at 100 metre centres with lines at bth OOO0 and 0900 This square grid is the ptimum and is necessary because knwn auriferus structures and alteratin in Grenfell Twnship and n the prperty trend bth nrtherly and easterly. Grid lcatin 300E-200N is lcated at GPS c-rdinates mE mN. This lcatin was selected t start the grid as ft was clse t the Nrth Shaft lcated at 273E-206N. Lines 200N and 900E were established as base lines. Gelgy The prperty was mapped during the summer-fall seasn f Grenfell Nrth Magnetic Gradient Survey,

7 Ttal Field Magnetic Survey A magnetic ttal field was perfrmed in cntinuus reading mde rendering readings spaced at apprximately 2 meter intervals. This survey was perfrmed t give clean ttal field strength data independent f instrument nise that can be encuntered in gradient surveys. Als clean data derived frm the ttal field strength survey was used t validate the data derived frm the gradient survey. Magnetic Gradient Orientatin Survey This vertical magnetic gradient survey was perfrmed independently f the ttal magnetic field strength survey. Bth the vertical gradient and ttal magnetic field strength prfiles were pltted. Auxiliary Test Data Magnets were passed (as varius cnfiguratin) under the gradimeter array t * T establish the ptential existence f reversed plarity f natural rcks and * establish a pssible magnetic signature fr rcks having a reversed magnetic plarity. Tpgraphy Survey Tpgraphy measurements were recrded in percent and used t calculate slpes used in the EM survey. The tpgraphy was pltted at l: 5000 scale n the EM-Magnetic prfile sheets. MaxMin EM Survey 3555 Hz and 888 Hz MaxMin EM surveys were perfrmed. Tpgraphy calculatins were used t maintain the transmitting and receiving cils cplanar during the survey. l. VERTICAL GRADIENT, TOTAL MAGNETIC FIELD SURVEY Ratinal Ratinal Traditinally magnetic surveys target magnetic lws as pssible auriferus alteratin. Fe-carbnate and sericitic alteratin and silicificatin destry the primary magnetic field f the hst rcks. Sme frmatins; hwever, prbably have reversed magnetic fields that give magnetic values lwer than the magnetically neutral magnetic fields sught. This magnetic gradient survey was designed t establish if magnetic lws caused by reversed magnetic fields can be discriminated frm magnetic lws ver magnetically Grenfell Nrth Magnetic Gradient Survey,

8 neutral rcks including auriferus alteratin. It was anticipated that the value f the magnetic gradient will be * near zer ver magnetically neutral rcks * psitive ver nrmally plarised rcks and * negative ver rcks f bth reversed plarity. Instrumentatin A Scintrex Envimag was used in gradimeter array using walkmag mde. Ttal magnetic field strength readings were measured at 2 secnd intervals which generated readings spaced at apprximately tw-meter intervals. This interval is ideal t prduce the true magnetic signature (magnetic texture). In the gradimeter array f the Scintrex Envimag, the rd supprting the upper sensr is munted directly n the lwer sensr. This is nt a prblem in stp and g surveys; hwever, in cntinuus reading mde, irregular mtin appears t ccasinally stress the sensrs causing errneus spiked readings. Als the upper sensr is 0.5 m higher than in the ttal field array. This expses the upper sensr t incidental cntact with verhanging brush. Cntact with this brush als causes spiked data. These errneus readings may cnstitute 1-5*54 f the data making fr nisy data that can impact the validity f cnturing and make prfile interpretatin awkward. A vertical 0.5m distance separates the upper and lwer sensrs gradimeter sensrs. The instrumentatin multiplies the measured difference by a factr f 2 t render a vertical gradient reprted as nanteslas per vertical meter. A psitive gradient f 10 nanteslas (nt) indicates the lwer sensr is reading 5 nt greater than the upper sensr. Cnversely, a negative gradient indicates the lwer sensr is reading less than the upper sensr. Prcedure July 2-Aug 7, 1999 David and Graham Rbinsn cnducted the survey. Data was presented n prfile by a visual basic prgram prepared by Graham Rbinsn. Backgrund infrmatin and technical supprt were prvided by Dug Rbinsn cnsulting. Ttal field strength base statins were measured but the ttal field strength data was nt crrected. Grenfell Nrth Magnetic Gradient Survey,

9 Data Presentatin Nisy readings were manually remved frm the database t render quiet useable data. Gaps in the prfiles identify the lcatins f nisy readings (spiked data) remved frm the database. The previus ttal magnetic field strength survey was used as a base line t differentiate nise frm true readings. The data was prfiled (1:5000 scale) using prgramming develped by Graham Rbinsn. The data was nt cntured because the prfiles shw a very flat gradient. The ttal magnetic field strength at the lwer sensr and the prjected magnetic field strength ne meter abve were pltted n as fllws: * the lwer sensr values are prfiled by heavy line * the prjected value ne meter abve the lwer sensr (equal t the reading at lwer sensr [nt] minus the vertical gradient [nt per meter]) pltted as a thin line. Nisy readings caused by instrument mtin and incidental cntact with verhead bjects were manually edited frm the database. A ntatin "pipe line" was added t the prfiles where pipeline nise was encuntered. Gaps in the prfiles mark edited readings. Prfiling was perfrmed using prgramming develped by Graham Rbinsn. A 1:5000 cmpilatin f magnetic ttal field strength magnetic interpretatin plan is prvided t supplement the prfiles. Observatins The instrument appears t have a minus 20 nt shift in the upper sensr relative t the lwer sensr. Reprted gradients f negative 20 nt appear t be true neutral. All ttal field strength prfiles were pltted with the vertical gradient data subtracted frm the lwer sensr data giving theretical ttal field values ne meter abve the lwer sensr. * This is a prjected value, nt a true value * the data accentuated instrument nise creating needless cnfusin. It is recmmended this prcess was abandned in favur f pltting the actual reading at the lwer and upper sensrs. The upper sensr value (nt) = lwer sensr value (nt) minus 0.5 times gradient value (nt/m). If the ttal field strength at bth the upper and lwer sensrs are pltted the prfiles will tend t cnverge (-20 nt when instrument shift is accunted fr) ver magnetically neutral Grenfell Nrth Magnetic Gradient Survey,

10 frmatins. This in cnjunctin with the stacked prfile gradient data appears t be the ptimum data presentatin prcedure. Cautin is required as in areas f deep verburden where: * the upper and lwer sensr readings will als cnverge t neutral * the gradient values will apprach neutral. * The apparent wavelength f the ttal field respnse will braden The general absences f true negative respnses, the general simplicity f the magnetic signature and cmmn deep verburden rendered this survey less infrmative than in areas having strng and cmplex magnetic signatures. A pssible magnetic unit with reversed plarity may exist at 900N-850E. Other less distinct negative signatures appear t exist at 600E-390S (cautin prfile nt cmplete) and 1300E- SOON. Gradient data has a mre cmplex and shrter wavelength than ttal field data. This gives the gradient prfile a spiky appearance. This is in cntrast t ttal field data that tends t have a brader smther signature. Magnetic gradients are extremely sensitive t near surface surces. This is in cntrast t ttal field strength that respnds well t surces at much greater depth. The amplitude f the ttal field respnse relative t the gradient respnse is useful t estimate the surce depth r distance t the bedrck. At Line OOON-325E the pipeline demnstrates a typical high amplitude gradient and ttal field respnse cmbined with a shrt wavelength gradient respnse. This cmbinatin is typical f very strngly magnetic near surface surces. This type f respnse is als expected with irn frmatin r magnetite rich intrusives r flws. At line 100N-575E a similar weaker but sharply defined respnses f bth ttal field and gradient indicate the surce is prbably in utcrp r under very shallw verburden. At line OOON-925E a strng brad ttal field respnse with n gradient respnse indicates the surce is deep, pssibly deep verburden. This infrmatin can be useful in planning stripping prgrams sites and defining limits f targets. Grenfell Nrth Magnetic Gradient Survey, l O

11 Strng ttal field respnses with assciated weak, prnunced gradient respnses (similar t the respnses at 635E and 830E n line 400N) appear t be under shallw r mderate verburden, prbably within stripping range. J. AUXILARY TEST DATA Magnets were passed (as varius cnfiguratins) under the gradimeter arrays (sme reprted belw. The prcess was smewhat crude as the magnet was mved by hand in apprximate lcatin as reprted. The resultant curves are smewhat ruff due t slightly irregular hand mtin. An apparent shift frm the zer psitin f the sensrs may be a real expressin due t the inclinatin f the earth's primary magnetic field. The magnet was passed l.0 meters under the array passing frm three meters nrth t 3 meters suth f the array. With the suth seeking ple up (nrmal plarity) nrmal psitive respnses ccurred in bth sensrs with a psitive vertical gradient (reprted as traverse 33b n prfile). This was repeated with the suth-seeking ple dwn (reversed plarity). As expected, negative respnses ccurred in bth sensrs with a negative vertical gradient (reprted as traverse 32 n prfile). At a psitin 1.0m belw the array the magnet was rtated end fr end, three cmplete 360 degree cycles (1800 degrees). At 000, 360, 720 and 1800 degrees the nrth seeking ple was vertically up (reversed plarity) (reprted as traverse 11 n prfile). K. RECOMMENDATIONS * The gradient survey data shuld be integrated with the gelgical mapping. * Gradient surveys can be useful surveys fr site specific explratin tasks. L. LIST OF CO-HOLDERS Grenfell Nrth McCmbe Prperty Barry McCmbe is the sle wner f the McCmbe prperty Grenfell Nrth Rbinsn Prperty Duglas Rbinsn and Betty Rbinsn are the sle wners (jint tenants) f the Grenfell Nrth Rbinsn Prperty. Grenfell Nrth Magnetic Gradient Survey,

12 M. LIST OF REFEENCES Grenfell Twnship Grant, J. A Gelgical Reprt N. 30. Bmpass and Grenfell Twnships fc accmpanying Map N 2060: Bmpass and Grenfell Twnships Scale l inch t 0.5 mile (l :31680). Savage, W.S Mineral Resurces Circular N Mineral Resurces and Mining Prperties in the Kirkland Lake-Larder Lake area. Thmsn, J. E. 1950: Gelgy f Teck Twnship and the Kengami Lake Area, Kirkland Lake Gld Belt: Ontari Department f Mines, Annual Reprt fr 1948, Vl. 57, Part 5, p l-5 3. Scale l inch t 1000 feet (1:12000) Ontari Gelgical Survey Preliminary Map P-2262A. Kirkland Lake Area Grenfell Twnship Airbrne Electrmagnetic Survey Ttal Intensity Magnetic Survey. Scale 1: Grenfell Nrth Magnetic Gradient Survey,

13 CERTIFICATE OF QUALIFICATIONS I, Duglas Rbinsn, f 24 Victria Avenue, Swastika, Ontari hereby certify that: 1. I am a registered prfessinal Engineer f the prvince f Ontari, N I am a graduate f Queen's University in Kingstn Ontari with an Hnurs Bachelr f Science, Gelgical Engineering 1975, and Nrthern Cllege, Schl f Mines in Haileybury, Ontari, I have been practising my prfessin since graduatin. 4. The infrmatin cntained in this reprt is the result f wrk dne by myself and the references cited. 5. I wn n direct r indirect interests in the Grenfell Nrth Prperty (McCmbe). 6. Betty Rbinsn and I wn l QQ/% interest in the Grenfell Nrth Rbinsn Prperty as jint Tenants. Respectfully submitted Duglas^binsn, P. Eng. January 24,2000, Grenfell Nrth Magnetic Gradient Survey,

14 CERTIFICATE OF QUALIFICATIONS I, David Rbinsn, Nrth Bay, Ontari hereby certify that: 1. I am a registered Prspectr in Ontari: Licence # K22681 and Client N I have been practicing mineral explratin since The infrmatin cntained in this reprt is the result f wrk dne by myself and the references cited. 4. I wn n direct r indirect interests in Grenfell Nrth Respectfully submitted David Rbinsn January 24,2000 Grenfell Nrth Magnetic Gradient Survey,

15 CERTIFICATE OF QUALIFICATIONS I, Graham Rbinsn, f Nrth Bay, Ontari hereby certify that: 1. I am a registered Prspectr hi Ontari: Licence # K23005 and Client N I have been practising mineral explratin since The infrmatin cntained in this reprt is the result f wrk dne by myself and the references cited. 4. I wn n direct r indirect interests in Grenfell Nrth Prperty. Respectfully submitted Graham Rbinsn January 24,2000 Grenfell Nrth Magnetic Gradient Survey,

16 BENOIT MAISONVILLE BERNHARDT Amikugami -L I nl/a l GRENFELL N. McCmbe KIRKLAND LAKE

17 ** EB'HDbd **..A-' CCT /CPI ' ri ni Figure 2: Claim Map: Randm Scale ' X!'' l 5 s *v A.IT* 02:0T 00. LI Nbf

18 M. E, Hunt, Dinctar, Gttfruuf BrmeH ^JsS^s *ii" J\ : / --.- f' -x.r- /r'. te'si'v'r'fflfc ^ GRENFEL N 'v McCmbe,' Prperty GRENFEL Rbinsn Prperty GRENFEL McCmbe Prperty Map 2O60 BOMPAS AND GRENFELL TOWNSHIPS TIMISKAMING DISTRICT Nale 1:31,680 r l Inch l Vi M ile

19 SYMBOLS LEOEND Glacial striae. Esker. Small rck utcrp. Bundary f rck utcrp. CENOZOIC* PLEISTOCENE AND RECENT Clay, sand, gravel. UNCONFORMITY Gelgical bundary, defined. Gelgical bundary, apprximate. Gelgical bundary, assumed. Hrizntal bedding. Strike and dip; directin f tp unknwn. Strike and vertical dip; directin f tp unknwn. Directin (arrw) in which inclined beds face as indicated by crss bedding. Directin in which lava flws face as indicated by shape f piflws. Synclinal axis. Anticlinal axis. ^ Strike and dip f schistsity. i Strike f vertical schistsity. Strike f schistsity, dip unknwn. i Strike f vertical gneisssity. Lineatin (plunge knwn). Jinting, inclined. Jinting, vertical, fault indicated, r assumed. Railway. Mtr rad. Prvincial highway number encircled where applicable. PRECAMBRIAN** PROTEROZOIC HURONIAN COBALT GROUP*** ARCHEAN Gwganda Frmatin 5a Argillite. 5b Arkse, greywacke. 5c Cnglmerate, cnglmeratic arkse, greywacke. UNCONFORMITY BASIC INTRUSIVE ROCKS**** 4 Undifferentiated diabase. 4a Matachewan diabase. INTRUSIVE CONTACT ACID INTRUSIVE ROCKS 3a Granite (hrnblende-quartz mnznite). 3b Syenite, syenite prphyry, quartzfeldspar prphyry, alaskite. 3c Basic syenite, lamprphyre. INTRUSIVE CONTACT SEDIMENTARY ROCKS 2a Basal grit, greywacke. 2b Cnglmerate, greywacke. 2c Tuff and agglmerate, trachyte and trachytic agglmerate and breccia. UNCONFORMITY BASIC VOLCANIC ROCKS 1 Undifferentiated intermediate and basic vlcanic rcks, la Basalt, andesite, dacite. 1b Gabbr, diabase, dirite.***** 1f Fragmental lavas. 1p Pillw lavas. 1s Sheared lavas. 1r Prphyritic lavas. 1v Amygdalidal lavas. 1u Spherulitic lavas. 1m Amphiblite schist and gneiss. Twnship bundary. Apprximate lca tin nly. Apprximate psitin f mining prperty. See list f prperties. Au Cld Cu Cpper S Sulphide mineralizatin (pyrite). LIST OF PROPERTIES L Campbell, A. E., Estate. (Prir t 1935, Fur Natins Cnslidated Gld Mines Ltd.) 2. Ellitt, Gerge G.. (1962}Grubstake. 3. Magni Mining Crpratin Ltd. 4. Myfake Mines Ltd. 5. Prspectrs Assciates. W Tungsten Figure 3b: Legend t General Gelgy Grenfell Tp.

20 Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 3+00 E 1:5000 Scale -400

21 ' ^"Cli "' Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 2+00 E 1:5000 Scale

22 y- - v \./-^ Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) k , -400 Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 4+00 E 1:5000 Scale

23 Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 5+00 E 1:5000 Scale

24 ft Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 6+00 E 1:5000 Scale

25 Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) r A Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 7+00 E 1:5000 Scale

26 t J Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) tuu 200 ^s\./ A- \ ~-^ -/l ' li v -v^'v' V^v- -\ J - ' J'^.^-^ Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 8+00 E 1:5000 Scale

27 Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N : 9+00 E 1:5000 Scale -400

28 Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) twu 200 -v^- *^-w - 'v^\r~' ^ s^~- *~ ""-A -/^- -w y..^^ ~-*/** - ~. ^ ^,^-^Aw -J\^~x^-^A ^ ~^-**~^-~\ " /^j Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: E 1:5000 Scale

29 Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) Vertical Gradient f Ttal Magnetic Field Strength (100nT7cm) Grenfell N: E 1:5000 Scale

30 Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) Vertical Gradient f Ttal Magnetic Field Strength (100nT7cm) Grenfell N: E 1:5000 Scale

31 QO Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) 40ft Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: E 1:5000 Scale

32 L\ n e Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 3+00 S 1:5000 Scale -400

33 ^j-s Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) ur^ Vertical Gradient f Ttal Magnetic Field Strength (100nT7cm) Grenfell N: 2+00 S 1:5000 Scale -400

34 ,r S L* h e Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) V Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 1+00 S 1:5000 Scale

35 58000 l. ^ /"\ \v s 1f\ j \ AJl \ w""" A. A v, f^tf^^ ' iw/*""' x^ A ^^ '-^j \~~^ z^' /'1 //x f\ V -^d ^ ^** *-^. -'^AV ^. ^N. - " P/ye Tntal Mannetir PiAlrl.Qtrennth in nt a* Rnttnm Senir Heaw fminiifi Vertical Gradient Thir Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 0+00 N 1:5000 Scale

36 \ PlfC Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) tuu 200 \^L^L- ^ --Jj. - -^ T Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: N 1:5000 Scale

37 Plfl Lin e Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) \T Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 2+00 N 1:5000 Scale -400

38 Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) t\j\j 200 1'i /v -- ^-^y-4 --^^Sj L l. j w-^j^a ^ ^ ~'\f Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 3+00 N 1:5000 Scale -200

39 O Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) 200 ia-a Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 4+00 N 1:5000 Scale

40 f Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Tfekg * Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 5+00 N 1:5000 Scale

41 Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) Vertical Gradient f Ttal Magnetic Field Strength (100nT7cm) Grenfell N: 6+00 N 1:5000 Scale

42 Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) HUU 200 ~y~-^f-f\. * ^Vi./"s-v\y/ ^ " w'"-vrayvv-u W^V^^ Vertical Gradient f Ttal Magnetic Field Strength (100nT7cm) Grenfell N: 7+00 N 1:5000 Scale

43 Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) Vertical Gradient f Ttal Magnetic Field Strength (loont/cm) Grenfell N: 8+00 N 1:5000 Scale -400

44 Ttal Magnetic Field Strength in nt at Bttm Sensr Heavy (Minus Vertical Gradient Thin) Vertical Gradient f Ttal Magnetic Field Strength (100nT7cm) Grenfell N: 9+00 N 1:5000 Scale -400

45 ENVI-MAG Envirnmental Magnetmeter/Gradimeter Lcating Buried Drums and Tanks? The NEW ENVI-MAG Is the slutin t this envirnmental prblem. ENVI-MAG Is an inexpensive, lightweight, prtable "WALKMAG" which enables yu t survey large areas quickly and accurately. ENVI-MAG is a prtable, prtn preces sin magnetmeter and/r gradimeter, fr getechnical, archaelgical and envirnmental applicatins where high prductin, fast cunt rate and high sensitivity are required. It may als be used fr ther applicatins, such as mineral explratin, and may be cnfigured as a ttal-field magnetmeter, a vertical gradimeter r as a base statin. The ENVI-MAG - easily detects buried drums t depths f 10 feet r mre * mre sensitive t the steel f a buried drum than EM r radar * much less expensive than EM r radar - survey prductivity much higher than with EM r radar Main feature* Induda: * select sampling rates as fast as 2 times per secnd * "WALKMAG" mde fr rapid acquisi tin f data * large internal memry, expandable t 200,000 readings * easy t read, large LCD screen displays data bth numerically and graphically * ENVIMAP sftware tr prcessing and mapping data ENVI-MAG cmprises several basic mdules; a lightweight cnsle with a large screen alphanumeric display and ' high capacity memry, a staff munted sensr and sensr cable, rechargeable battery and battery charger, RS-232 cable and ENVIMAP prcessing and mapping sftware. Fr gradimetry applicatins an upgrade kit is available, cmprising an additinal prcessr mdule fr installatin in the cnsle, and a secnd sensr with a staff extender. ENVI-MAG Prtn Magnetmeter in peratin Fr base statin applicatins a Base Statin Accessry Kit is available s that the sensr and staff may be cnverted int a base statin sensr. Features and Benefits "WALKMAG" Magnetmeter/Gradimeter The "WALKMAG" mde f peratin (smetimes knwn as "Walking Mag") is user-selectable frm the keybard. In this mde, data is acquired and recrded at the rate f 2 readings per secnd as the peratr walks at a steady pace alng a line. At desired intervals, the peratr "triggers" an event marker by a single key strke, assigning crdinates t the recrded data. True Simultaneus Gradimeter An ptinal upgrade kit is available t cnfigure ENVI-MAG as a gradimeter t make true, simultaneus gradimeter measurements. Gradimetry is useful fr getechnical and archaelgical surveys where small near surface magnetic targets are the bject f the survey. Selectable Sampling Rates 0.5 secnd, 1 secnd and 2 secnd reading rates user selectable frm the keybard. Large-Key Keypad The large-key keypad allws easy access fr glved-hands in cld-weather pera tins. Each key has a multi-purpse functin. Frnt panel f ENVI-MAG shwing a graphic prfile f data and large-key keypad Large Capacity Memry ENVI-MAG with standard memry stres up t 28,000 readings f ttal field measurements, readings f gradimetry data r 151,000 readings as a base statin. An expanded memry ptin is available which increases this standard capacity by a factr f 5. Easy Review f Data Fr quality f data and fr a rapid analy sis f the magnetic characteristics f the survey line, several mdes f review are pssible. These include the measure ments at the last three statins, the ability t scrll thrugh any r all previus readings in memry, and a graphic display f the previus data as prfiles, line by line. This feature is very useful fr envirnmental and archaelgical surveys. Highly Prductive The "WALKMAG" mde f peratin acquires data rapidly at clse statin intervals, ensuring high-definitin results. This increases survey prductivity by a factr f 5 when cmpared t a cnven tinal magnetmeter survey. "Datacheck" Quality Cntrl f Data "Datacheck" prvides a feature wherein at the end f each survey line, data may be reviewed as a prfile n ENVI-MAG's screen. Datacheck cnfirms that the

46 Instrument Is functining crrectly and allws the user t nte the magnetic relief (anmaly) n the line. Large Screen Display )*Super-Twisr 64 x 240 dt (8 lines x 40 characters). LCD graphic screen prvides gd visibility In all light cnditins. A display heater Is ptinally available fr lw-temperature peratins belw 0*C. Ose-up f tha BWI-MAG saven shwing data presented afar fch reading Interactive Menus The set-up f ENVI-MAG is menu-driven, and minimizes the peratr's learning time, and n-ging tasks. Cse-up at display f ENVI-MAG shwing interactive set-up menu Specificatins * Ttal FMd Operating Rang* 20,000 t 100,000 nt (gammas) Ttal Reid Abslute Accuracy W-1nT Tuning Fully slid state. Manual r autmatic, keybard selectable Cycling (Reeding) Rate* r 2 secnds, up t 9999 secnds fr base statin applicatins, keybard selectable Sensitivity 0.1 nt at 2 secnd sampling rate G radimeter Optin Indudes a secnd sensr, 20 inch (Vim) staff extender and prcessr mdule "WALKMAG- Mde 0.5 secnd fr walking surveys, variable rates tr hilly terrain Digital Display LCD "Super Twist*. 240 x 64 dts graphics, 3 line x 40 characters alphanumeric^ Display Hesser Thermstatically cntrlled, fr cld weather peratins Keybard Input 17 keys, dual functin, membrane type MWbk Functin 32 characters, 5 user-defined MACRO'S fr ^uick entry Rechargeable Battery and Battery Charger An -ff-the-shelp lead-acid battery and charger are prvided as standard. The lw-cst "Camcrder" type battery Is available frm electrnic parts distributrs everywhere. HELP-Llne Available Purchasers f ENVI-MAG are prvided with a HELP-LJne telephne number t call In the event assistance Is needed with an applicatin r instrumentatin prblem. ENVIMAP Prcessing and Mapping Sftware ' Supplied with ENVI-MAG, and custm designed fr this purpse, is easy-t-use, very user-friendly, menu driven data prcessing and mapping sftware called ENVIMAP. This unique sftware appears t the user t be a single prgram, but is in fact a sequence f separate prgrams, each perfrming a specific task. Under the menu system, there are separate prgrams t d the fllwing: a) read t ENVI-MAG data and refrmat it Int a standard cmpatible with the ENVIMAP sftware b) grid he data int a standard grid frmat c) create a vectr file f psted values Standard Memry Ttal Field Measurements: 28,000 readings Gradimeter Measurements: readings Base Statin Measurements: 151,000 readings Expanded Memry Ttal Field Measurement:: readings Gradimeter Measurements: 109,000 readings Base Statin Measurements: 750,000 readings Real-Time Clck Recrds fub date, hurs, minutes and secnds with 1 secnd reslutin, -f/-1 secnd stability ver 12 hurs Digital Data Output RS-232C Interface. 600 t Baud. 7 r 8 data bits. 1 start. 1 stp bit, n parity frmat Selectable carriage return delay (0-999 ms) t accmmdate stw peripherals. Handshaking is dne by X-rVX-ff Analg Output O mv fun scale utput vltage with keybard selectable range ft, ,1,000 r 10,000 nt full scale Pwer Supply Rechargeable Camcrder* type. 2.3 Ah, Leadadd batry. 12 Vlts at 0.65 Amp fr magnetmeter, 1.2 Amp fr gradimeter. External 12 Vtt input fr base statin peratins Optinal external battery puch fr cad weather peratins Battery Charger 110 Vlt Vlt, 50/6O Hz with flne and baseline JdentfflcaOn that allws tie user tp add sme Me infrmatin and bufld a surtame turrund d) cntur the ridded data e) autecaje tha cmbined results f the pftdngfturrund step and the cnturing stp t IK n a standard 8.5 Ins. wfct dtmatrix printer f) rastertze and utput the resrts f stp e) t the printer ENVIMAP Is designed t be as simple as pssible. The user is required t answer a few basic questins asked by ENVIMAP, and then simply tggles 'GO* t let ENVIMAP prvide default parameters fr the making f the cntur map. The user can mdify certain characteristics f the utput plt ENVIMAP'S menu system is bth keybard and muse "perable. HELP screens are integrated with the menu system s that HELP Is displayed whenever the user requests it Optins Available ' True simultaneus gradimeter upgrade. Base statin upgrade * Display heater fr lw temperature peratins - External battery puch Operating Temperature Range Standard O* t 60*C Optinal -40'C t 60'C Dimensins Cnsle - 10 x 6 x 2.25 Inches (250 mm x 152 mm x 55 mm) T.F. sensr inches dia. x 7 inches (70 mm x 175mm) Grad. sensr and staff extender Inches dia. x 26.5 Inches (70 mm x 675 mm) T.F. staff - 1 inch dia x 76 Inches (25 mm x 2 m) Weight Cnsle -5.4 IDS (2.45 kg) with rechargeable battery T. F. sensr- 2.2 "bs (1.15 kg) Grad. sensr IDS (1.15 kg) Staff Ibs (0.8 kg) Hd Olfle* 222 Snidarcrft Rad Cncrd, Ontari. Canada L4K1B5 Telephne: (90S) Fax: (905) r Telex: In the USA: Scimrsx Inc. BS Rival Rck Drive Unit 202 Sutfal. New YrK Telephne: ( Fax: (716) Bieber E Steambc Envirn: Extn, I Univers U.S.A. J.D. Fei Austin, Naval f China L O'-mc G i Uraner Saskau White Vanci T. Has Vanc Budes. undr Hannc Terra.1 Gmbt Hamb

47 S CO p. en y ui T] ID Q W Grenfell Nrth Grid- Grenfell Tp. 2-S O 4OOm

48 42A01NE REPORT GRENFELL 020 ON MAGNETIC GRADIENT SURVEY (January 2000) Grenfell Suth Grid Grenfell Twnship Larder Lake Mining Divisin Nrth-eastern Ontari NTS 42A/1.20 i UTM Grid Zne 1 1, NAD. 27 Fr Barry McCmbe Duglas Rbinsn P. Eng. Dug Rbinsn Cnsulting

49 42A01NE GRENFELL 0 2 OC A. PROJECT LOCATION...4 B. ACCESS...^ C. CLAIM LIST AND CLAIM MAP...4 D. DEPOSIT TYPE AND GEOLOGY...4 E. EXPLORATION TARGETS...5 F. SUMMARY OF PREVIOUS WORK... 5 G EXPLORATION WORK... 5 Grid... 5 Gelgy...6 Ttal Field Magnetic Survey...6 Magnetic Gradient Orientatin Survey...6 Auxiliary Test Data...6 H. VERTICAL GRADIENT, TOTAL MAGNETIC FIELD SURVEY...6 Ratinal...^ Instrumentatin...7 Prcedure...? Data Presentatin...7 Observatins...8 I. AUXTLARYTESTDATA...9 J. RECOMMENDATIONS...^ J. LIST OF CO-HOLDERS...10 K. LISTOFREFEENCES...10 CERTIFICATE OF QUALIFICATIONS Figures Figure l: General Lcatin Map: Scale l: 100,000 Figure 2: Claim Map: Randm Scale Figure 3a. General Gelgy Grenfell T.: (Map 2060 reduced t l.50000) Figure 3b: Legend t General Gelgy Grenfell Tp. Figure 4. Cntured Vertical Gradient Magnetic Ttal Field Strength Grenfell Suth Grid: Scale Figure 5: Cmpilatin Grenfell Suth Grid: Scale 1:2500 Grenfell Suth Magnetic Gradient Survey,

50 Prfiles Line 400E Vertical Gradient Ttal Magnetic Field Strength Line 500E Vertical Gradient Ttal Magnetic Field Strength Line 600E Vertical Gradient Ttal Magnetic Field Strength Line 650E Vertical Gradient Ttal Magnetic Field Strength Line 700E Vertical Gradient Ttal Magnetic Field Strength Line 750E Vertical Gradient Ttal Magnetic Field Strength Line 800E Vertical Gradient Ttal Magnetic Field Strength Line 900E Vertical Gradient Ttal Magnetic Field Strength Line 1000E Vertical Gradient Ttal Magnetic Field Strength Line 700N Vertical Gradient Ttal Magnetic Field Strength Line SON Vertical Gradient Ttal Magnetic Field Strength Line 900N Vertical Gradient Ttal Magnetic Field Strength Line 1000N Vertical Gradient Ttal Magnetic Field Strength Line 1100N Vertical Gradient Ttal Magnetic Field Strength Test: Nrmal Plarity Test: Reversed Plarity Test: Rtated Plarity Envimag Specificatins Grenfell Suth Magnetic Gradient Survey,

51 A. PROJECT LOCATION Claim and This explratin prperty is lcated 12 km west f Kirkland Lake in the suth central part f Grenfell Twnship (Plan # G-3212) f the Larder Lake Mining Divisin. Claims and are centred at Latitude 48007'00"N and Lngitude 80012'00"W (UTM Zne: mN, mE). The reader is referenced t NTS Map Sheets 42 A/1 fr the general lcatin f the prperty. Ontari Base Map gives detailed tpgraphic features f the prperty. B. ACCESS The prperty is accessed via Highway 66 leading 14 km west frm Kirkland Lake. Frm this lcatin prceed nrth 3 km n Highway 11 (0. l km past the Blanche River). Turn right nt the dirt rad leading 0.7 km. east t the natural gas pipeline. Turn left and prceed 0.5 km nrth t line 700N which crss the pipeline (ruff but passable pipeline rad). C. CLAIM LIST AND CLAIM MAP The McCmbe prperty cmprises a large blck f claims in Grenfell Twnship. Wrk was dne n the fllwing claims units (suth part) units " D. DEPOSIT TYPE AND GEOLOGY The prperty lies within irn and magnesium rich thleiitic basalts f the Kenjevis Grup. Dark green magnetic irn thleiitic basalts dminate with lessr green-grey magnesium thleiitic basahs. The stratigraphy strikes nrth-west and dips steeply twards the nrth east. This stratigraphy is interrupted by altered auriferus structures including faults, wide pyritic Fe-carbnate-sericite alteratin znes and pyritic quartz veining. Pyritic quartz veins ccur bth within and utside the majr alteratin znes. These structural trends are bth east-nrtheast and nrtherly trends. The east-nrtheast trending structures are parallel t and part f the structural dmain cntrlled by the Larder Lake Break-Cadillac Break. This structural dmain hsts the gld depsits lcated between Matachewan, Ontari and Val d'or, Quebec including the Kirkland Lake gld camp and the Kerr Addisn Mine. Grenfell Suth Magnetic Gradient Survey,

52 E. EXPLORATION TARGETS Disseminated auriferus sulphides and gld veins are the explratin target. These auriferus sulphides are expected t be hsted within larger alteratin znes including Fecarbnate alteratin, sericitizatin r silicificatin. Gld veins within structural breaks are als targeted. Disseminated auriferus sulphides are expected t be hsted within alteratin including extensive Fe-carbnate alteratin, sericitizatin r silicificatin. The assciated alteratin is expected t have a magnetic signature indicating the destructin f the primary magnetic fabric f the hst rcks. Gld veins within (gelgical) structural breaks are als targeted. The veins are expected t be marked by very weak gephysical signatures. The magnetic surveys seek breaks in the magnetic signature that mark interruptin in lithlgies acrss the targeted structural breaks. Field mapping, a magnetmeter survey and a gradimeter survey target bth extensive alteratin expected t hst auriferus sulphides and narrw alteratin znes assciated with gld veins. F. SUMMARY OF PREVIOUS WORK Claim and * D, Grant Sirla cnducted stripping and verburden drilling defining a system f auriferus quartz veins. * Kinrss Gld cnducted prspecting and stripping and defined a majr new mineralized altered defrmatin zne apprximately 40 m suth f an ld shaft sunk n narrw auriferus quartz vein. Little ther explratin is recrded. The Kirkland Lake Resident gelgist's files recrd n significant gelgical mapping f the prperty. G EXPLORATION WORK Grid A square grid was cut at 100 metre centres with lines at bth OOO0 and 0900 This square grid is the ptimum and is necessary because knwn auriferus structures and alteratin in Grenfell Twnship and n the prperty trend bth nrtherly and easterly. Grid lcatin 600E-800N is lcated at GPS c-rdinates mE mN. Grenfell Suth Magnetic Gradient Survey,

53 Gelgy The prperty was mapped by Frank Pleger during the summer f Ttal Field Magnetic Survey A magnetic ttal field was perfrmed in cntinuus reading mde rendering readings spaced at apprximately 2 meter intervals. This survey was perfrmed t give clean ttal field strength data independent f instrument nise that can be encuntered in gradient surveys. Als clean data derived frm the ttal field strength survey was used t validate the data derived frm the gradient survey. Magnetic Gradient Orientatin Survey This vertical magnetic gradient survey was perfrmed independently f the ttal magnetic field strength survey. Bth the vertical gradient and ttal magnetic field strength prfiles were pltted. Fr the cnvenience f the reader gradient data was als pltted as a filter cmmnly knwn as cnturing. Auxiliary Test Data Magnets were passed (as varius cnfiguratin) under the gradimeter array t * T establish the ptential existence f reversed plarity f natural rcks and * establish a pssible magnetic signature fr rcks having a reversed magnetic plarity. H. VERTICAL GRADIENT, TOTAL MAGNETIC FIELD SURVEY Ratinal Traditinally magnetic surveys target magnetic lws as pssible auriferus alteratin. Fecarbnate and sericitic alteratin and silicificatin destry the primary magnetic field f the hst rcks. Sme frmatins, hwever, prbably have reversed magnetic fields that give magnetic values lwer than the magnetically neutral magnetic fields sught. This magnetic gradient survey was designed t establish if magnetic lws caused by reversed magnetic fields can be discriminated frm magnetic lws ver magnetically neutral rcks including auriferus alteratin. It was anticipated that the value f the magnetic gradient will be * near zer ver magnetically neutral rcks * psitive ver nrmally plarised rcks and Grenfell Suth Magnetic Gradient Survey,

54 negative ver rcks f bth reversed plarity. Instrumentatin In the gradimeter array f the Scintrex Envimag, the rd supprting the upper sensr is munted directly n the lwer sensr. This is nt a prblem in stp and g surveys; hwever, in cntinuus reading mde, irregular mtin appears t ccasinally stress the sensr causing errneus spiked readings. Als the upper sensr is 0.5 m higher than in the ttal field array, expsing the sensr t incidental cntact with verhanging brush. Cntact with this brush als causes spiked data. These errneus readings may cnstitute l-5 07 f the data making fr nisy data that can impact the validity f cnturing and make prfile interpretatin awkward. A vertical 0.5m distance separates the upper and lwer sensrs gradimeter sensrs. The instrumentatin multiplies the measured difference by a factr f 2 t render a vertical gradient reprted as nanteslas per vertical meter. A psitive gradient f 10 nanteslas (nt) indicates the lwer sensr is reading 5 nt mre than the upper sensr. Cnversely, a negative gradient indicates the lwer sensr is reading less than the upper sensr. Prcedure Octber 25 and 26, 1999 the authr cnducted the survey. A Scintrex Envimag in walkmag mde was used in walkmag mde. Ttal magnetic field strength readings and the vertical gradient f the ttal magnetic field strength were measured at 2 secnd intervals which generated readings spaced at apprximately tw-meter intervals which is ideal t prduce the true magnetic signature (magnetic texture). Ttal field strength base statins were measured but the ttal field strength data was nt crrected. Data Presentatin Nisy readings were manually remved frm the database t render quiet useable data. Gaps in the prfiles identify the lcatins f nisy readings (spike data) remved frm the database. The previus ttal magnetic field strength survey was used as a base line t differentiate nise frm true readings. Grenfell Suth Magnetic Gradient Survey,

55 The data was prfiling (1:2500 scale) using prgramming develped by Graham Rbinsn and cntured using the Scintrex Envimap prgram. The gradient data is als presented in filtered frmat cmmnly knwn as cnturing. The ttal magnetic field strength at bth the upper and lwer sensr were prfiled as fllws: * the lwer sensr is prfiled by heavy line * the upper sensr data is prfiled by a thin line. Initially the data was prfiled as if the sensrs were separated l meter. Observatins The instrument appears t have a minus 20 nt shift in the upper sensr relative t the lwer sensr. Reprted gradients f negative 20 nt appear t be true neutral. Initially all prfiles were pltted with the vertical gradient data subtracted frm the lwer sensr data giving theretical ttal field values ne meter abve the lwer sensr. This prcess was abandned because: * in the pinin f the authr this is nt a true value * the data accentuated instrument nise creating needless cnfusin. Pltting the ttal field strength at bth the upper and lwer sensrs as dne in this reprt appears t aid identificatin f magnetically neutral frmatins ver which the prfiles tend t cnverge (-20 nt when instrument shift is accunted fr). This in cnjunctin with the stacked prfile gradient data appears t be the ptimum data presentatin prcedure. Cautin is required as in areas f deep verburden where: * the upper and lwer sensr readings will als cnverge t neutral * the gradient values will apprach neutral. * The apparent wavelength f the ttal field respnse will braden Cmbined ttal field strength and gradient surveys appear t have validity in gld explratin if used with fllw up verificatin by detailed field mapping. Cntur filters characterise areas as: * strng psitive gradients (nrmal plarity) * strng negative gradients (including magnetic shadws nrth f strng magnetic highs) * near neutral rcks Grenfell Suth Magnetic Gradient Survey,

56 hwever, narrw alteratin can be masked by the cnturing filter. Final determinatin f explratin targets shuld be perfrmed by field mapping with prfiles in hand. A trend line frm 650E-1100N--^50E-700N appears t divide rcks f psitive gradients t the suth-west frm near neutral rcks t the nrth-east. This culd represent a fault cntact r a hiatus in vlcanism that culd hst mineralizatin and alteratin. It appears the pipeline has been placed within a tpgraphical break alng a structural break within bedrck. l. AUXILARY TEST DATA Magnets were passed (as varius cnfiguratins) under the gradimeter arrays (sme reprted belw. The prcess was smewhat crude as the magnet was mved by hand in apprximate lcatin as reprted. The resultant curves are smewhat ruff due t slightly irregular hand mtin. An apparent shift frm the zer psitin f the sensrs may be a real expressin due t the inclinatin f the earth's primary magnetic field. The magnet was passed 1.0 meters under the array passing frm three meters nrth t 3 meters suth f the array. With the suth seeking ple up (nrmal plarity) nrmal psitive respnses ccurred in bth sensrs with a psitive vertical gradient (reprted as traverse 33b n prfile). This was repeated with the suth-seeking ple dwn (reversed plarity). As expected, negative respnses ccurred in bth sensrs with a negative vertical gradient (reprted as traverse 32 n prfile). At a psitin 1.0m belw the array the magnet was rtated end fr end, three cmplete 360 degree cycles (1800 degrees). At 000, 360, 720 and 1800 degrees the nrth seeking ple was vertically up (reversed plarity) (reprted as traverse 11 n prfile). RECOMMENDATIONS The gradient survey data shuld be integrated with the gelgical mapping. At 600E N examine an unusually flat near neutral signature at r near the prjectin f an altered zne expsed by Kinrss stripping. Als examine similar signature at line 700E N. The authr has nt verified the signature's surce with field measurements. If this signature is a valid expressin f neutral carbnate- Grenfell Suth Magnetic Gradient Survey,

57 sericite alteratin it culd be an explratin tl exceeding the value f a single magnetic ttal field strength magnetic survey. * The trend line frm 650E-1100N-^850E-700 shuld be examined, particularly if mineralizatin r alteratin is bserved in the vacinity f this line. * Reexamine the prperty with prfiles and cntur filter in hand J. LIST OF CO-HOLDERS Barry McCmbe is the sle hlder f the prperty. K. LIST OF REFEENCES Grenfell Twnship Grant, J. A Gelgical Reprt N. 30. Bmpass and Grenfell Twnships fe accmpanying Map N 2060: Bmpass and Grenfell Twnships Scale l inch t 0.5 mile (1:31680). Savage, W. S Mineral Resurces Circular N Mineral Resurces and Mining Prperties in the Kirkland Lake-Larder Lake area. Thmsn, J. E. 1950: Gelgy f Teck Twnship and the Kengami Lake Area, Kirkland Lake Gld Belt: Ontari Department f Mines, Annual Reprt fr 1948, Vl. 57, Part 5, pl-53. Scale l inch t 1000 feet (1:12000) Ontari Gelgical Survey Preliminary Map P-2262A. Kirkland Lake Area Grenfell Twnship Airbrne Electrmagnetic Survey Ttal Intensity Magnetic Survey. Scale 1: Grenfell Suth Magnetic Gradient Survey,

58 CERTIFICATE OF QUALIFICATIONS I, Duglas Rbinsn, f 24 Victria Avenue, Swastika, Ontari hereby certify that: 1. I am a registered prfessinal Engineer f the prvince f Ontari, N I am a graduate f Queen's University in Kingstn Ontari with an Hnurs Bachelr f Science, Gelgical Engineering 1975, and Nrthern Cllege, Schl f Mines in Haileybury, Ontari, I have been practising my prfessin since graduatin. 4. The infrmatin cntained in this reprt is the result f wrk dne by myself and the references cited. 5. I wn n direct r indirect interests in Grenfell Suth. Respectfully Duglas Rbinsn, January 18,2000 Grenfell Suth Magnetic Gradient Survey,

59 BENOIT MAISONVILLE BERNHARDT Amikugaml L l Ua l Sesekmika Lake GRENFELL GRENFELL N. McCmbe ^GRENFELt N CD Rbinsn KIRKLAND LAKE -j mn Kengami' Figure \ - G eneral Lcatin Map Scale h IOO,CXX)

60 ** C0'3Dbd IdlOl ** Figure 2: Claim Map: Randm Scale B 5 J. t ni 00 yd 0E:0T 00. it

61 M- E, Hunt, fhrtdr. O*feffu*f Brmeh Map 2O6O BOMPAS AND GRENFELL TOWNSHIPS TIMISKAMING DISTRICT Si-ale l :31,680 r l Inch l '/2 M ile r** MOO

62 SYMBOLS LEGEND Glacial striae. l Esker. \ Small rck utcrp. CENOZOIC* PLEISTOCENE AND RECENT Clay, sand, gravel. Bundary f rck utcrp. UNCONFORMITY Gelgical bundary, defined. ' **j Gelgical bundary, apprximate. Gelgical bundary, assumed. + j Hrizntal bedding. j"* j Strike and dip; directin f tp unknwn. Strike and vertical dip; directin f tp unknwn. Directin (arrw) in which inclined beds (ace as indicated by crss bedding. Directin in which lava (lws (ace as indicated by shape f pillws. PRECAMBRIAN** PROTEROZOIC HURONIAN COBALT GROUP*** ARCHEAN Gwganda Frmatin 5a Argillite. 5b Arkse, greywacke. 5c Cnglmerate, cnglmeratic arkse, greywacke. UNCONFORMITY BASIC INTRUSIVE ROCKS**** Synclinal axis. Anticlinal axis. 4 Undifferentiated diabase. 4a Matachewan diabase. INTRUSIVE CONTACT ^'f l Strike and dip f schistsity. *-* Strike f vertical schistsity. * *. Strike f schistsity-, dip unknwn. *t Strike f vertical gneisssity. /** Lineatin (plunge knwn). Jinting, inclined. l Jinting, vertical, Fault indicated, r assumed. l Railway, Mtr rad- Prvincial highway number encircled where applicable. Other rad. l Trail, prtage, winter rad. Building. l Shaft. ACID INTRUSIVE ROCKS 3a Granite (hrnblende-quartz mnznite). 3b Syenite, syenite prphyry, quartzfeldspar prphyry, alaskite, 3c Basic syenite, lamprphyre. INTRUSIVE CONTACT SEDIMENTARY ROCKS 2a Basal grit, greywacke. 2b Cnglmerate, greywacke. 2c Tuff and agglmerate, trachyte and trachytic agglmerate and breccia. UNCONFORMITY BASIC VOLCANIC ROCKS 1 Undifferentiated intermediate and basic vlcanic rcks. 1a Basalt, andesite, dacite. 1b Gabbr, diabase, dirite.***** If Fragmental lavas. 1p Pillw lavas. 1s Sheared lavas. 1r Prphyritic lavas. 1v Amygdalidal lavas. 1u Spherulitic lavas. 1m Amphiblite schist and gneiss. Twnship bundary. Apprximate lca tin nly. Apprximate psitin f mining prperty. See list f prperties. Au Gld Cu Cpper LIST OF PROPERTIES J. Campbell, A. E.. Estate. (Prir t Fur Natins Cnslidated Gld Mines Ltd.) f. ellitt. Gerge G., (i962)grubstake. 3. Magni Mining Crpratin Ltd. 4. Mylake Mines Ltd. 5. Prspectrs Assciates. S Sulphide mineralizatin (pyrite). W Tungsten Figure 3b: Legend t General Gelgy Grenfell Tp.

63 400E 500E 600E 700E BOOE 900E 1000E 400E 500E 600E 700E 600E 9QOE 1000E Cntur Interval: 200 nt Grenfell Suth Grid: Grenfell Tp. Magnetic Field Strength nanteslas SCWTROf ENVIUAP plt by Duglas Rbinsn, Ouq Rbinsn Cnsulting -l

64 400E 500E 600E 700E 800E 900E 1000E 400E Cntur Interval: 50 nt 50QE 600E 700E 800E Grenfell Suth Grid: Grenfell Tp. Gradient: Magnetic Ttal Field Strength nanteslas per meter SCINTREX &MUAP plt by Duglas Rbinsn. Pw Rbinsn Cnsuming 900E 1000E D*c*ntin: U Degrees Wrat

65 ] LEGEND Magnetic High Magnetic Lw -J1- B Magnetic Break z 8- z - w z 10 z. C I I- C l " i i~ 1 i 1 c [ r4* p l _ i ^ r l [ C r L \ x J^....f i^ 1 J 1 h " f ~ L \ ia \ 1 \ \^ ""~~ \ "' r " " * " i 400E 500E 600E 4700E BOOE ' 900E 1000E i i \^ ^ ' -* i r i i, i ^^ t r-r v.....l-l a... r...j-i... T^ V..... ^ t f O 1 \ *: X 'l [ j X x 3 ' * - ^ - f... i - 0 Shaft \\6^ C^ -^" [ \ x \ -\ m\^- \ K \!\ \ 1 S \ \ ^ v \ ^ \ X i \ \ ^\ t l i \ i i ^ T \22- \ T "c \ f-,, \ ; 1?r 1^ 1 1?!.-A : i \; i P i ^\ i V 1 U ^\ 1 i J l w l~"r^...j.it......p... -, i ^ \ \ : i i\ \. v \ i\ \!?\ \ - i i \ ^ n: \ \ \ r3 ^ \ \ ; K x " kr i...i. \... i \ \ N...fq...,..,...^ *-...^...^r- - 8 z [ [ c c LtJr i i \ f^r -y i i \ i - - T -t 4OOE 500E 600E 700E 800E 900E 1000E 25 0 j, M Grenfell Suth Grid: Grenfell Tp. U"UPU' fr^hllf^^^ Magnetic Field Strength - ~"~ nnteslqs Cntur Interval: 200 nt SCINTROf QMU/W plt by OutJ Rbinsn, Dua Rbintn Cnsu/tfna Ox*xnin: 13 C*g *. w^t ~" z 00 z 8

66 (O 5 s(o O) in 3 S in Ttal Magnetic Field Strength at Lwer Sensr Thick 4 Upper Sensr ^TF-O.SX Vert. Grad Thin) Greenfell Suth Grid: Grenfell Tp: Line 4+OOE S (O r Vertical gradient f Ttal Magnetic Field Strength (SOOnT/cm) "P

67 Ttal Magnetic Field Strength at Bttm Sensr Thick 4 Upper Sensr ^TF -0.5X Vert. Grad. Thin) Greenfell Suth Grid: Grenfell Tp: Line 5+OOE (O c Vertical gradient f Ttal Magnetic Field Strength (SOOnT/cm) c

68 CM (O O CD O to if) O O CO in Ttal Magnetic Field Strength at Lwer Sensr Thick (stf -0.5X Vert. Grad. Thin) Greenfell Suth Grid: Grenfell Tp: Line 6+OOE O g in 120CT Vertical gradient f Ttal Magnetic Field Strength (SOOnT/cm) *? g

69 Ttal Magnetic Field Strength at Bttm Sensr Thick 8. Upper Sensr (st Greenfell Suth Grid: Grenfell Tp: Line 6+50E X Vert. Grad. Thin) dv ^ 1 v -. /^s. / ^v^y \^-~^j 1 k I/I f 1 il l p Vertical gradient f Ttal Magnetic Field Strength (SOOnT/cm) CD S CO?

70 03 S CO c vn r^ in Ttal Magnetic Field Strength at Bttm Sensr Thick 4 Upper Sensr (STF -0.5X Vert. Grad. Thin) Greenfell Suth Grid: Grenfell Tp: Line 7+OOE 1200^ (D g CO CO Vertical gradient f Ttal Magnetic Field Strength (300nT7cm)

71 /^ \l^~ ^ CO 0T CO s in 0 CO in g S s 6C) Ttal Magnetic Field Strength at Bttm Sensr Thick (stf -0.5X Vert. Grad. Thin) Greenfell Suth Grid: Grenfell Tp: Line 7+50E 8 m 10 CD \K ^ 6C) Vertical gradient f Ttal Magnetic Field Strength (SOOnT/cm) - c

72 Ttal Magnetic Field Strength at Bttm Sensr Thick ft Upper Sensr ^ -0.5X Vert. Grad. Thin) Greenfell Suth Grid: Grenfell Tp: Line 8+OOE tt) CO AA CO Vertical gradient f Ttal Magnetic Field Strength (300nT7cm) (O

73 Ttal Magnetic Field Strength at Bttm Sensr Thick (STF -0.5X Vert. Grad. Thin) Greenfell Suth Grid: Grenfell Tp: Line 9+OOE 1100 to CO,A- ^ x Vertical gradient f Ttal Magnetic Field Strength (SOOnT/cm) CO

74 ruv ^- ^ J^ - * 1* ^^ A M ~^-^v fj- J V/ ^H S10 g IO s L _. 0 t lo 0 s 8 t CM DO ^ Ttal Magnetic Field Strength at Bttm Sensr Thick 4 Upper Sensr (STF -0.5X Vert. Grad. Thin) Greenfell Suth Grid: Grenfell Tp: Line 10+OOE (O A A A A CO CD Vertical gradient f Ttal Magnetic Field Strength (SOOnT/cm)

75 eg (O (O in S l-~ IO Ttal Magnetic Field Strength at Bttm Sensr Thick 4 Upper Sensr (STF -0.5X Vert. Grad. Thin) Greenfell Suth Grid: Grenfell Tp: Line 7+OON in g (O CO CO Vertical gradient f Ttal Magnetic Field Strength (300nT7cm)

76 CM CD O CO O O g (O 8 t g s N- in Ttal Magnetic Field Strength Thick S Upper Sensr (STF -0.5X Vert. Grad. Thin) Greenfell Suth Grid: Grenfell TD: Line 8+OON 900 CD 10 m CO Vertical gradient f Ttal Magnetic Field Strength (300nT7cm) 900 "f 1000

77 Ttal Magnetic Field Strength at Bttm Sensr Thick 4 Upper Sensr (STF -0.5X Vert. Grad. Thin) Greenfell Suth Grid: Grenfell Tp: Line 9+OON CO c c Vertical gradient f Ttal Magnetic Field Strength (SOOnT/cm)

78 Ttal Magnetic Field Strength at Bttm Sensr Thick ft Upper Sensr (^TF -0.5X Vert. Grad. Thin) Greenfell Suth Grid: Grenfell Tp: Line 10+OON (O CO Vertical gradient f Ttal Magnetic Field Strength (300nT7cm) c 9

79 Ttal Magnetic Field Strength at Bttm Sensr Thick S Upper Sensr (STF -0.5X Vert. Grad. Thin) Greenfell Suth Grid: Grenfell Tp: Line 11+OON 1 (O -vva A /v ' J J \ ri w ^,fv _ ^ l A V,. J 1 V7 ^" l.. ^^ V c 0 CO 9 4C)0 5CJO 6CF0 7C)0 8C)0 9( ) Vertical gradient f Ttal Magnetic Field Strength (SOOnT/cm)

80 Traverse 33b SS Ple up in 03 in c 00 in in in O -3 Ttal Magnetic Field Strength at Bttm Sensr Heavy Ttal Mag. Field at Tp Sensr(Mlnus 0.5'Vert. Grad. Thin) N-S Line centred n Magnetmeter Suth Seeking Ple Up at -1.0m (Nrmal plarity) CD c (X0.5 = 90) c CD O -3 Vertical gradient f Ttal Magnetic Field Strength

81 Traverse 32 NS Ple up OJ IO Rws CO CO (O CO in CO If) CM CO in CO in Ttal Magnetic Field Strength at Bttm Sensr Heavy Ttal Mag. Field at Tp Sensr (Minus 0.6*Grad. Thin) M-S Line centred n Magnetmeter Nrth Seeking Ple Up at -1.0m (Reversed Plarity) -3 (O CO -16 c -136 (X0.5-68) (O O Vertical gradient f Ttal Magnetic Field Strength -3

82 Traverse Rt Rw Oin CO in CO in S m S in Ttal Magnetic Field Strength at Bttm Sensr (Heavy) Ttal Mag. Field at Tp Sensr (Minus 0.6* Vertical Gradient Thin) Magnet at 1.0 m with Nrth Seeking Ple Starting vertlcaly up and rtated clckwise three 360 Degree cycles while facing west. 1080s c (X0.5 = 80) (X0.5-90) Vertical gradient f Ttal Magnetic Field Strength CO CD 1080

83 ENVI-MAG Envirnmental Magnetmeter/Gradimeter Lcating Buried Drums and Tanks? The NEW ENVI-MAG Is the slutin t this envirnmental prblem. ENVI-MAG Is an inexpensive, lightweight, prtable "WALKMAG" which enables yu t survey large areas quickly and accurately. ENVI-MAG is a prtable, prtn preces sin magnetmeter and/r gradimeter, fr getechnical, archaelgical and envirnmental applicatins where high prductin, fast cunt rate and high sensitivity are required. It may als be used fr ther applicatins, such as mineral explratin, and may be cnfigured as a ttal-field magnetmeter, a vertical gradimeter r as a base statin. The ENVI-MAG * easily detects buried drums l depths f 10 feet r mre * mre sensitive t the steel f a buried drum than EM r radar ' much less expensive than EM r radar * survey prductivity much higher than with EM r radar Main feature* Include: ' select sampling rates as fast as 2 times per secnd * "WALKMAG" mde fr rapid acquisi tin f data * large internal memry, expandable t 200,000 readings * easy t read, large LCD screen displays data bth numerically and graph bally * ENVIMAP sftware fr prcessing and mapping data ENVI-MAG cmprises several basic mdules; a lightweight cnsle with a large screen alphanumeric display and ' high capacity memry, a staff munted sensr and sensr cable, rechargeable battery and battery charger, RS-232 cable and ENVIMAP prcessing and mapping sftware. Fr gradimetry applicatins an upgrade kit is available, cmprising an additinal prcessr mdule fr installatin in the cnsle, and a secnd sensr with a staff extender. ENVI-MAG Prtn Magnetmeter in peratin Fr base statin applicatins a Base Statin Accessry Kit Is available s that the sensr and staff may be cnverted int a base statin sensr. Features and Benefits "WALKMAG" Magnetmeter/Gradimeter The "WALKMAG" mde f peratin (smetimes knwn as "Walking Mag") is user-selectable frm the keybard. In this mde, data is acquired and recrded at the rate f 2 readings per secnd as the peratr walks at a steady pace alng a line. At desired intervals, the peratr triggers" an event marker by a single key strke, assigning crdinates t the recrded data. True Simultaneus Gradimeter An ptinal upgrade kit is available t cnfigure ENVI-MAG as a gradimeter t make true, simultaneus gradimeter measurements. Gradimetry is useful fr getechnical and archaelgical surveys where small near surface magnetic targets are the bject f the survey. Selectable Sampling Rates 0.5 secnd, 1 secnd and 2 secnd reading rates user selectable frm the keybard. Large-Key Keypad The large-key keypad allws easy access fr glved-hands in cld-weather pera tins. Each key has a multi-purpse functin. Frnt panel l ENVI-UAG shwing a graphic prfile t data and largv-kay keypad Large Capacity Memry ENVI-MAG with standard memry stres up t 28,000 readings f ttal field measurements, readings f gradimetry data r 151,000 readings as a base statin. An expanded memry ptin is available which increases this standard capacity by a factr l 5. Easy Review f Data Fr quality f data and fr a rapid analy sis f the magnetic characteristics f the survey line, several mdes f review are pssible. These include the measure ments at the last three statins, the ability t scrll thrugh any r all previus readings in memry, and a graphic display f the previus data as prfiles, line by line. This feature is very useful fr envirnmental and archaelgical surveys. Highly Prductive The "WALKMAG" mde f peratin acquires data rapidly at clse statin intervals, ensuring high-definitin results. This increases survey prductivity by a factr f 5 when cmpared t a cnven tinal magnetmeter survey. "DatachGck" Quality Cntrl f Data "Datacheck" prvides a feature wherein at the end f each survey line, data may be reviewed as a prfile n ENVI-MAG's screen. Datacheck cnfirms that the

84 Instalment is functining crrectly and allws ttie user t nte the magnetic relief (anmaly) n the line. Large Screen Display )"Super-TwisT 64 x 240 dt (8 lines x 40 characters), LCD graphic screen prvides gd visibility In all light cnditins. A display heater Is ptinally available fr lw-temperature peratins belw 0*C. Ctsa-up /the ENVI-MAG scnn shwing data presrted afar each reading Interactive Menus The set-up f ENVI-MAG is menu-driven, and minimizes the peratr's learning time, and n-ging tasks. Cs-vp f display f ENVI-MAG shwing interactive set-up menu Specificatins Rechargeable Battery and Battery Charger An "ff-the-shelf" lead-acid battery and charger are prvided as standard. The lw-cst Camcrder type battery Is available frm electrnic parts distributrs everywhere. HELP-Llne Available Purchasers f ENVI-MAG are prvided with a HELP-Line telephne number t call In the event assistance Is needed with an applicatin r instrumentatin prblem. ENVIMAP Prcessing and Mapping Sftware Supplied with ENVI-MAG, and custm designed fr this purpse, is easy-t-use, very user-friendly, menu driven data prcessing and mapping sftware called ENVIMAP. This unique sftware appears t the user t be a single prgram, but is in fact a sequence f separate prgrams, each perfrming a specific task. Under the menu system, there are separate prgrams t d the fllwing: a) read the ENVI-MAG data and refrmat it Int a standard cmpatible with the ENVIMAP sftware b) grid the data int a standard grid frmat c) create a vectr file f psted values wwh Bne and baseline Identificatin that allws tie user t add sme trt Infrmatin and buttd a suitable surrund d) cntur the gridded data a) autscat the cmbined raeutts f me pstjngfeurrund slap and the cnturing step t (tt n a standard 8.5 Ins. wide dtmatrix printer O rastariza and utput the results f step e) t the printer ENVIMAP Is designed t be as simple as pssible. The user Is required t answer a few basic questins asked by ENVIMAP, and then simply tggles "GO" t let ENVIMAP prvide default parameters fr the making f the cntur map. The user can mdify certain characteristics f the utput plt. ENVIMAP'S menu system is bth keybard and muse perable. HELP screens are Integrated with the menu system s that HELP is displayed whenever the user requests it. Optins Available * True simultaneus gradimeter upgrade. Base statin upgrade * Display heater fr lw temperature peratins * External battery puch f Bieber Steamb Envir: Extn. TJniver U.S.A. J.D. Fe Austin, Ttal Field Operating Range t nt (gammas) Ttal Field Abslute Accuracy W- 1nT Tuning Fully slid state. Manual r autmatic, keybard selectable Cycling (Reading) Ratea 0.5, 1 r 2 secnds, up t 9999 secnds fr base statin applicatins, keybard selectable Sensitivity 0.1 nt at 2 secnd sampling rate Gradimeter Optin Indudes a secnd sensr, 20 inch (Yxn) staff sxtender and prcessr mdule "WALKUAG- Mde 05 secnd fr walking surveys, variable rates fr hilly terraai Digital Display LCD 'Super Twist", 240 x 64 dts graphics, 8 line x 40 characters alphanumencs Display H i ax r Thermstacalfy cntrlled, fr cld weather peratins Keybard Input 17 keys, dual functin, membrane type Ntebk Functin 32 characters. 5 user-defined MACRO'S fr quick entry Standard Memry Ttal Field Measurements. 28,000 readings Gradimeter Measurements: 21,000 readings Base Statin Measurements: 151,000 readings Expanded Memry Ttal Field Measurements. 140,000 readings Gradimeter Measurements: 109,000 readings Base Statin Measurements: 750,000 readings Real-Time Clck Recrds full date, hurs, minutes and secnds with 1 secnd reslutin, */- 1 secnd stability ver 12 hurs Digital Data Output RS-232C interface, 600 t 57,600 Baud, 7 r 8 data bits, 1 start, 1 stp bit n parity frmat Selectable carriage return delay (0-999 ms) t accmmdate slw peripherals. Handshaking is dne by X-n/X-ff Analg Output O mv full scale utput vltage witti keybard selectable range f 1. 10, 100, 1,000 r 10,000 nt full scale Pwer Supply Rechargeable 'Camcrder" type. 2.3 Ah. Leadacid battery. 12 Vlts at 0.65 Amp fr magnetmeter, 1.2 Amp fr gradimeter, External 12 VK input fr base statin peratins Optinal external battery puch fr cad weather peratins Battery Charger 110 Vlt Vlt. 50/60 Hz Operating Temperature Range Standard O* t 60'C Optinal -40*C t 60'C Dimensin* Cnsle - 10 x 6 x 2.25 Inches (250mm x 152 mm x 55 mm) T.F. sensr inches dia. x 7 inches (70 mm x 175mm) Grad. sensr and staff extender Inches dia. x 26.5 inches (70 mm x 675 mm) T.F. staff -1 Inch dia. x 76 inches (25 mm x 2 m) Weight Cnsle Its (2.45 kg) with rechargeable battery T. F. sensr- 2.2 ts (1.15 kg) Grad. sensr IDS (1.15 kg) Staff-1.75 Ibs (0.8 kg) Mid Office 222 Snidercrlt Rad Cncrd, Onta/i. Canada L4K l BS Telephne: (905) Fan.: (905) r Telex: In the USA: Scintrax Inc. BS River RcX OnV8 Unit 202 3uttal. New YrK Telepflne: (716) c ax: (716) Naval. China. Urane: Saskat White Vance T. Ha.^ Vance undr Hanni Terra: GmbI Hamt