Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42A09SW00019

Record: MDI42A09SW00019

General

Commodities

Primary Commodities: Gold, Zinc

Location

Township or Area: Beatty, Beatty, Beatty

Latitude: 48° 33' 15.52"    Longitude: -80° 16' 41.16"

UTM Zone: 17    Easting: 553271   Northing: 5378164    UTM Datum: NAD83

Resident Geologist District: Kirkland Lake

NTS Grid: 42A09SW

Point Location Description: Shaft

Location Method: AMIS Site Visit

Access Description: Proceed 0.4km east from the junction of highways 101 and 572 to the Munro Mine site road. Continue 1km north and then 1.4km west on drill road. Travel 200m south through bush to the site.

Exploration History

1934: Edgecreek Consolidated Gold Syndicate Ltd.- diamond drilling, sank a 22 foot deep shaft. 1940: Edgecreek Gold Mines: began sinking a vertical 2 compartment shaft; shaft sunk to 115 ft. with a station established at 100 ft. 1941-46: Denovo Gold Mines Ltd.: was incorporated in March to acquire the assets of Edgecreek Gold Mines (1936) Ltd.; property was reported to have been controlled by Denovo Gold Mines, the northern shaft was reported to be 34 feet deep, and the southern vertical 2 compartment shaft was reported to be 28 feet deep; DD-5-2525 ft. 1972-1974: Canadian Johns-Manville Co. Ltd. - mapping, biogeochemical survey, ground geophysics (VLF, magnetic) 1973-1980: Amax of Canada Ltd.: (now Canamax Resources Inc.): prospecting, geological mapping 1981-1984: J.T. Wood - magnetic, VLF-EM, resistiviy surveys 1990: M. Shore - magnetometer survey, VLF survey, geological survey. 1990-1994: 297 3090 Canada Inc.- mag, VLF-EM and geological surveys; beep mat survey. 1996-97: Panterra Minerals Inc. and Kalahari Resources Inc.: DD-6-2116 ft.; assays

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Abitibi

Tectonic Assemblage: Porcupine

Geological Age: Mesoarchean  

Metamorphism Grade: Greenschist

Geology Comments

Feb 11, 2016 (R Degagne) - Bedrock exposure is limited to within a few hundred metres of the southeast striking and steeply dipping Contact Fault which separates (older) Porcupine Group sediments to the southwest from (younger) weakly metamorphosed (greenschist or lower metamorphic facies) steeply dipping and north facing tholeiitic basalt flow and related rocks of the (Archean) Stoughton- Roquemaure Group to the northeast. Bedrock underlying the property occupies part of the southern limb of the McCool Hill Syncline, the southeast striking and northwest plunging axis of which is located about 7.2 km northeast of the occurrence area in northern Munro Township. Virtually all exposed bedrock consists of Porcupine Group metasediments which are within about 300 m of the Contact Fault. Although the Contact Fault is not exposed on the property, along the fault's strike to the northwest, underlying Porcupine Group metasediments are in angular disconformity with overlying Stoughton-Roquemaure Group volcanic rocks while along strike to the southeast (in the Munro/Guibord Township area) the Contact Fault gradually terminates and these two Groups are in conformable contact. Satterly and Armstrong interpreted the Contact Fault to display a dextral sense of apparent horizontal displacement on the basis of drag folds and fracture patterns developed in the metasediments. Johnstone and Trowell interpreted the fault to be mainly normal, and interpreted the presence of 75 º west plunging slickensides along shear faces within the fault to indicate that the northern (volcanic) block is relatively downdropped. The Contact Fault is offset in several places on and near the property by northeast striking cross faults across which are displayed both sinestral and dextral apparent horizontal displacements (as discussed in Prest and Johnstone and Trowell.

Lithology

Lithology Comments

Feb 11, 2016 (R Degagne) - Bedrock in the occurrence area consists mainly of sparsely exposed north facing and subvertically to steeply south dipping and overturned metamorphosed (greenschist or lower metamorphic facies) turbiditic wackes, argillites, conglomerates, and cherts of the (Archean) Porcupine Group. Intrusive rocks in the area include small plugs and associated dikes of feldspar porphyry which intrude the sediments a few hundred metres west of the property (dikes of feldspar porphyry have been intersected by diamond drilling on the property near the south shaft and a 200-400 foot wide, east southeast striking sill-like body of diorite which is exposed on the Stewart-Abate and Guinea properties (to the west). The location of this dioritic body is clearly indicated by airborne geophysical surveys to extend into the southern part of the Denovo property. Narrow (tens of metres in width) generally north striking diabase dikes of the (Proterozoic) Matachewan swarm are exposed northwest of the property in Munro Township and a northeast striking (Proterozoic) Preissac olivine diabase dike intrudes the Archean bedrock about 3 km northwest of outcrop exposed on the property. Exposed in outcrop around the northern shaft are southeast striking and southwest dipping metamorphosed interbedded feldspathic wacke and argillite and a narrow (2-5 foot wide) mafic sill.

Mineralization

Mineralization Comments

Feb 11, 2016 (A Wilson) - Best assays from a sampling program completed by 297 3090 Canada Inc. ranged from 0.003 to 0.004 oz./t Au. Assays from the Panterra Minerals Inc. and Kalahari Resources Inc. drilling include a weakly altered zone at the collar of hole -01 returned an average gold grade of 0.51 g/t over 3.05 meters (including 1.00 g/t over 0.91m). This is quite significant compared to the low background gold content within the Porcupine sediments. The presence of anomalous gold near the collar could suggest a broad gold halo surrounding an untested structure to the south of holes 96DEN-01and -02. Best results from 297 3090 Canada Inc. sampling returned values of 240 ppb Au and 2.85% Zn. Best assays from the Panterra and Kalahari Resources drilling were 1.00 ppm Au over 0.91 m obtained from hole 96 DEN-01. The best assays from the Amax Minerals project was reported to be 340 ppb of Au.

Feb 11, 2016 (R Degagne) - Mineralization on which the northern shaft was sunk appears to consist of narrow pyritic quartz and quartz-carbonate veinlets which are developed within a narrow carbonatized and sericitized mafic sill intruding thinly bedded (centimetre scale) Porcupine Group turbiditic metawackes and argillites. The shaft is about 60 m southwest of the Contact Fault which, where it is exposed elsewhere, may be characterized by intense associated carbonatization and patchy sericitization. Gash veins near the shaft are characterized by the mineral assemblage quartz-dolomite-(albite)-(pyrite) and are features resulting from a brittle deformational event. Penetrative sericitization of both the sill and the enclosing sedimentary rocks has also taken place. Calcite alteration has affected the sill distal to the gash veins and also occurs confined to hairline fractures which cut both the gash veins and the wallrock enclosing them. Gold assays obtained from the northern shaft area were low (less than 10 ppb) while arsenic values averaged about 75 ppm. Mineralization in the south shaft area occurs about 210 m southwest of the Contact Fault and consists of pyrite, chalcopyrite and arsenopyrite associated with veinlets and hand sample scale crackle breccia domains consisting of tight, irregularly developed pyritic fractures hosted by (relatively) thickly bedded (decimetre scale) feldspathic metawacke. Centimetre scale interbedded argillite is represented only rarely by samples in the waste piles surrounding the south shaft and, when observed, generally does not host veins or veinlets. Veins consist of the mineral assemblage quartz-calcite-Fe- dolomite and the wacke host rocks are variably dolomitic and sericitic.

Alteration Comments

Feb 11, 2016 (R Degagne) - The shaft is about 60 m southwest of the Contact Fault which, where it is exposed elsewhere, may be characterized by intense associated carbonatization and patchy sericitization. Gash veins near the shaft are characterized by the mineral assemblage quartz-dolomite-(albite)-(pyrite) and are features resulting from a brittle deformational event. Penetrative sericitization of both the sill and the enclosing sedimentary rocks has also taken place. Calcite alteration has affected the sill distal to the gash veins and also occurs confined to hairline fractures which cut both the gash veins and the wallrock enclosing them. Mineralization in the south shaft area occurs about 210 m southwest of the Contact Fault and consists of pyrite, chalcopyrite and arsenopyrite associated with veinlets and hand sample scale crackle breccia domains consisting of tight, irregularly developed pyritic fractures hosted by (relatively) thickly bedded (decimetre scale) feldspathic metawacke. Centimetre scale interbedded argillite is represented only rarely by samples in the waste piles surrounding the south shaft and, when observed, generally does not host veins or veinlets. Veins consist of the mineral assemblage quartz-calcite-Fe- dolomite and the wacke host rocks are variably dolomitic and sericitic. The waste dump adjacent to the shaft contains weakly Fe-dolomitized interbedded argillite and generally less than 1 mm grained feldspathic wacke and penetratively carbonatized and sericitized mafic sill material. The sediments are variably sericitic: more so and with an incipiently developed crenulation cleavage where the original sediment was finer grained, and less so where the original sediment was relatively coarser grained. The altered dike material is noteworthy for the presence of abundant, randomly oriented books of emerald green fuchsite.

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 1       Structure Type: Shear

Rank: 1       Structure Type: Shear

Site Visit Information

Date: Jan 24, 1997

Geologist: R Degagne

Notes: Visited in June, 1986 by A. C. Bath. Satterly and Armstrong reported that in the south shaft area '...the rocks are in part carbonatized and are cut by quartz-carbonate stringers and in places heavily mineralized by pyrite'. Although no samples observed by the present writer could be described to be 'heavily' sulphide bearing, sulphide mineralization was more extensive and diversely developed at the south shaft than at the north shaft. Trenches a few tens of metres east of the south shaft are blasted into a shear with azimuth 055. Proximity to such a northeast striking shear may account for the relatively higher base metal, gold, and arsenic values here, as has been documented to be the case elsewhere in the southeastern Beatty Township area (Morris 1972 for the Canadian Johns-Manville Co. Ltd., assessment files, Resident Geologist's Office, Kirkland Lake). Amax of Canada Ltd. reported (assessment files) that additional shears with azimuths ranging from 045-070 occur in the area and that gold assays as high as 340 ppb have been obtained from these. Analyses*: Sample: AB-86-36 <10 Au ppb, --- Ag ppm, ---- Cu ppm, --- Pb ppm, --- Zn ppm, ---- As ppm, -- Mo ppm. AB-86-37 <10 Au ppb, 2.1 Ag ppm, 23.1 Cu ppm, 397 Pb ppm, 297 Zn ppm, 84.8 As ppm, <5 Mo ppm. AB-86-38 <10 Au ppb, --- Ag ppm, ---- Cu ppm, --- Pb ppm, --- 71.9 -- AB-86-39 <10 Au ppb, 2.4 Ag ppm, 278.2 Cu ppm, 515 Pb ppm, 843 Zn ppm, 12.9 As ppm, <5 Mo ppm. AB-86-40 <10 Au ppb, 3.5 Ag ppm, 45.2 Cu ppm, 299 Pb ppm, 588 Zn ppm, 24.0 As ppm, <5 Mo ppm. AB-86-41 <10 Au ppb, -- Ag ppm, ---- Cu ppm, --- Pb ppm, --- Zn ppm, 2030 As ppm, -- Mo ppm. AB-86-42 129 Au ppb, <1 Ag ppm, 38.6 Cu ppm, 470 Pb ppm, 228 Zn ppm, 7560 As ppm, <5 Mo ppm. AB-86-45 <10 Au ppb, <1 Ag ppm, 101.5 Cu ppm, 382 Pb ppm, 560 Zn ppm, 3130 As ppm, <5 Mo ppm. * All assays performed by Accurassay Laboratories Ltd., Kirkland Lake.

References

File - Resident Geologist files KL-0349, KL-2989

Publication Number: Date:

Author:

Publisher Name:

Location: Kirkland Lake RGP office

Map - Township of Beatty, District of Cochrane, Ontario

Publication Number: M1947-02 Scale: 1:12,000    Date: 1997

Author: Satterly J., Armstrong H.S.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Township of Munro, District of Cochrane, Ontario

Publication Number: M1951-05 Date: 1997

Author: Satterly J., Hogg N.

Publisher Name: Ontario Dept. of Mines

Location:

Part - Geology of Beatty Township

Publication Number: ARV56-07 Page: 28  Date: 1997

Author: Satterly J., Armstrong H.S.

Publisher Name: Ontario Dept. of Mines

Location:

Folio - Beatty Township, District of Cochrane

Publication Number: GDIF266 Date: 1997

Author: Kirkland Lake RGO

Publisher Name: Ontario Geological Survey

Location:

Map - Quaternary geology of Matheson area, Cochrane District

Publication Number: P2735 Scale: 1:50,000    Date: 1985

Author: Vagners U.J.

Publisher Name: Ontario Geological Survey

Location:

Map - Geophysical/geochemical series, Matheson-Black River area, Beatty Township, airborne electromagnetic survey, total intensity magnetic survey, District of Cochrane

Publication Number: M80585 Scale: 1:20,000    Date: 1984

Author: Questor Surveys Ltd.

Publisher Name: Ontario Geological Survey

Location:

Mono - Mineral occurrences, deposits, and mines of the Black River-Matheson area

Publication Number: OFR5735 Page: 186-197  Date: 1990

Author: Bath A.C.

Publisher Name: Ontario Geological Survey

Location:

Map - Geological series, bedrock samples from the sonic drilling program 1987, Matheson area, District of Cochrane

Publication Number: P3114 Scale: 1:100,000    Date: 1989

Author: Johnstone R.M., Sutcliffe R.H., Steele K.G., Baker C.L., McClenaghan M.B.

Publisher Name: Ontario Geological Survey

Location:

Article - Precambrian geology of the Black River-Matheson (BRIM) area, District of Cochrane

Publication Number: MP126.056S Date: 1997

Author: Johnstone R.M., Trowell N.F.

Publisher Name: Ontario Geological Survey

Location:

Map - Black River-Matheson Area

Publication Number: OFM0013 Scale: 1:15,840    Date: 1985

Author: Johnstone R.M., Trowell N.F.

Publisher Name:

Location:

Map - Geological Compilation of the Lake Abitibi Area, Abitibi Greenstone Belt

Publication Number: P3398 Scale: 1:100,000    Date: 1999

Author: Ayer J.A., Berger B.R., Trowell N.F.

Publisher Name: Ontario Geological Survey

Location:

Part - Geology of Munro Township

Publication Number: ARV60-08 Date: 1997

Author: Satterly J.

Publisher Name: Ontario Dept. of Mines

Location:

Map - Geology of Beatty Township

Publication Number: OFM0158 Scale: 1:15,840    Date: 1991

Author: Johnstone R.M.

Publisher Name: Ontario Geological Survey

Location:

Map - Geological Compilation: Beatty and Munro Townships

Publication Number: P3395 Scale: 1:20,000    Date: 1999

Author: Barrie C.T.

Publisher Name: Ontario Geological Survey

Location:

Article - Quaternary geology and geochemical exploration in the Matheson area

Publication Number: MP140.294 Page: 112-123  Date: 1997

Author: McClenaghan M.B., Lavin O.P., Nichol I., Shaw J.

Publisher Name: Ontario Geological Survey

Location:

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