Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42A09SW00022

Record: MDI42A09SW00022

General

Commodities

Primary Commodities: Gold, Silver

Secondary Commodities: Zinc, Lead

Location

Township or Area: Beatty, Beatty, Beatty, Beatty

Latitude: 48° 33' 20.21"    Longitude: -80° 16' 50.85"

UTM Zone: 17    Easting: 553071   Northing: 5378307    UTM Datum: NAD83

Resident Geologist District: Kirkland Lake

NTS Grid: 42A09SW

Point Location Description: Pits 2.60 km north and 0.51 km west of the southeast corner of Beatty Township.

Location Method: Data Compilation

Access Description: Access to the occurrence is from the southeast by an overgrown road which may be reached from the paved Canadian Johns-Manville Co. Ltd. Munro (asbestos) Mine access road as indicated by Satterly (1952). The Munro Mine access road joins Highway 101 near the southwest corner of Munro Township. In 1986, the property access road was ATV passable as far as the eastern property boundary at the Beatty/Munro Township common boundary, but thereafter must be followed by foot.

Exploration History

1940-41: Pat Gold Mines, Limited - claims staked; 1941-1945: Cyril Knight Prospecting Co. Ltd.- optioned claims; pitting, trenching, mechanical overburden stripping , DD. 1984: Maude Lake Gold Mines Ltd. - DD; assays Variolitic basalt on claims once held by Pat Gold Mines is reported (R.A. Bennett for Maude Lake Gold Mines Ltd. in assessment file Bennett-Beatty Group). 1996: Pentland Firth Ventures Ltd.- DD-1-152 m, assays. 2004: Lake Shore Gold Corp. - airborne geophysics.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Abitibi

Tectonic Assemblage: Stoughton-Roquemaure

Geological Age: Mesoarchean  

Metamorphism Grade: Greenschist

Geology Comments

Feb 12, 2016 (R Degagne) - Local bedrock structure is dominated by the southeast striking, subvertically dipping, and north facing south limb of the McCool Hill Syncline. The Contact Fault in south central Beatty Township has been interpreted to be a steeply north dipping normal fault which locally displays 75º west plunging slickensides along shear faces The Contact Fault dies out to the southeast in the Munro/Guibord/Michaud Township area, where the Porcupine and Stoughton-Roquemaure Groups appear to be in conformable contact. To the west, in Beatty Township, Johnstone hypothesized that the Contact Fault may depart from the Porcupine /Stoughton-Roquemaure Group contact. Satterly and Armstrong, on the basis of fracture patterns developed in the metasediments, interpreted the Contact Fault to have an associated apparent dextral component of horizontal displacement. All bedrock in the area (except perhaps the lamprophyre dikes) has been interpreted to be offset by the Contact Fault. Johnstone interpreted the Preissac diabase dike to be younger than the Contact Fault and several northeast striking crossfaults in the area. The Preissac dike is, however, faulted by (and hence is older than) a regional scale north northeast striking crossfault across which significant (on the order of hundreds of metres) of apparent sinestral horizontal displacement has occurred.

Lithology

Lithology Comments

Feb 12, 2016 (R Degagne) - The property straddles approximately 1.8 km of the Contact Fault, a sparsely exposed steeply north dipping and southeast striking bedrock structure which is developed at the contact between weakly metamorphosed (greenschist or lower metamorphic grade) turbiditic sediments of the (Archean) Porcupine Group (to the southwest) and overlying tholeiitic basalt and related rocks of the (Archean) Stoughton-Roquemaure Group. Supracrustal bedrock underlying the property strikes southeast, dips vertically, faces northeast and forms part of the south limb of the McCool Hill Syncline, the southeast striking and northwest plunging axis of which is in Munro Township about 7 km northeast of the occurrence area. Intrusive rocks in the area include felsic dikes, northeast striking diabase dike of the (Proterozoic) Preissac swarm and narrow (metres in width) lamprophyre dikes. The occurrence area is underlain largely by well exposed southeast striking, steeply dipping and northeast facing massive to pillowed basalt and related rocks north of the Contact Fault.

Mineralization

Mineralization Comments

Feb 12, 2016 (A Wilson) - A 3.1 m section of Pentland Firth DDH- PCP-03 assayed 1.62 ppm Au including a 1.5 m section grading 2.67 ppm Au. Assays from the 1984 diamond drilling by Maude Lake Resources returned assays as much as 0.25 ounce of gold per ton. Gold values from samples collected by A. C. Bath returned gold assays ranging from 4615 ppb Au to 23206 ppb Au. Silver values ranged from <1 to 8.7 ppm. Lead values ranged from 352 to 404 ppm and zinc values ranged from 332 ppb Zn to 565 ppb Au.

Dec 07, 2005 (R Degagne) - Mineralization associated with the north striking Pat Gold Fault consists of anomalously elevated (up to 23000 ppb) gold assays within pyritic, dolomitic, sericitic, and possibly hematitic brecciated variolitic lava which is felsic in bulk composition and consists virtually entirely of large (5 mm size) coalesced grey/blue varioles. The presence of very fine grained pyrite within and marginal to tight fractures developed in the variolite indicates that pyrite (and presumably gold also) is epigenetic and that gold mineralization here is likely fault controlled rather than stratigraphically controlled. As with gold mineralization associated with northeast striking structures, the absence of both arsenopyrite and significantly anomalously elevated arsenic assays here are noteworthy. Additional occurrences of analogous gold mineralization associated with north striking cross fault may occur in the area. The association of anomalously elevated gold concentrations,pyrite, hematite, and the concurrent lack of elevated arsenic tenors in both northeast striking and north striking structures characterize known gold mineralization at the Pat occurrence. Anomalously elevated gold assays ranging from 154 to 23206 ppb were obtained from all samples which were assayed. The presence of anomalously elevated gold values associated with northeast striking (quartz)-(hematite)-pyrite seams (pyrite veins?) (sample AB-86-55) which transect the volcanic stratigraphy may indicate that analogous gold mineralization (e.g. pyrite associated) may occur with other northeast striking structures in the area. It is noteworthy that minimal wall rock carbonatization is associated with the northeast striking structure and that unlike other gold occurrences in the area (such as the Brown Munro, Northern Goldbelt and Denovo occurrences), arsenopyrite and/or anomalously elevated arsenic values are conspicuously absent here.

Alteration Comments

Dec 07, 2005 (R Degagne) - Mineralization associated with the north striking Pat Gold Fault consists of anomalously elevated (up to 23000 ppb) gold assays within pyritic, dolomitic, sericitic, and possibly hematitic brecciated variolitic lava which is felsic in bulk composition and consists virtually entirely of large (5 mm size) coalesced grey/blue varioles. Samples collected from overgrown and detritus filled trenches near the old surface stripping by the present writer (samples AB-86-47, -48, and -49) consist of shattered fine grained felsic blue/grey variolitic material which is variably dolomitized and sericitized.

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 1       Structure Type: Shear

Site Visit Information

Date: Jan 27, 1997

Geologist: R Degagne

Notes: Visited in 1986 by A. C. Bath (OFR 5735, V.1, p.211). Analyses*: AB-86-47 16222 Au ppb, 8.7 Ag ppm, 92.2 As ppm, 14.4 Cu ppm, 352 Pb ppm, 356 Zn ppm, <5 Mo ppm. AB-86-48 23206 Au ppb, 6.0 Ag ppm, 92.2 As ppm, 12.9 Cu ppm, 375 Pb ppm, 391 Zn ppm, <5 Mo ppm. AB-86-54 154 Au ppb, 1.9 Ag ppm, ---- As ppm, 12.1 Cu ppm, 404 Pb ppm, 332 Zn ppm, <5 Mo ppm. AB-86-55 4677 Au ppb, --- Ag ppm, 111 As ppm, ---- Cu ppm, --- Pb ppm, --- Zn ppm, --- Mo ppm. AB-86-56 4615 Au ppb, <1 Ag ppm, 92.2 As ppm, 6.7 Cu ppm, 376 Pb ppm, 565 Zn ppm, <5 Mo ppm. AB-86-57 314 Au ppb, --- Ag ppm, --- As ppm, ---- Cu ppm, --- Pb ppm, --- Zn ppm, --- Mo ppm. * All analyses performed by Accurassay Laboratories Ltd., Kirkland Lake.

References

File - Resident Geologist file KL-1777

Publication Number: Date:

Author:

Publisher Name:

Location: Kirkland Lake RGP office

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 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:

Part - Geology of Beatty Township

Publication Number: ARV56-07 Page: 29-30  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 - 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:

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:

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

Publication Number: OFR5735 Page: 209-217  Date: 1990

Author: Bath A.C.

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:

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 - 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:

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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