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Ontario Geological Survey
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MDI42A09SW00022
Record Name(s) | Pat Occurrence - 1940, Pat Gold Mines Ltd. - 1940, Munroe-Croesus/Pat Gold Property - 1996 |
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Related Record Type | Simple |
Related Record(s) | |
Record Status | Occurrence |
Date Created | 1990-Nov-10 |
Date Last Modified | 2023-Jan-17 |
Created By | |
Revised By |
Primary Commodities: Gold, Silver
Secondary Commodities: Zinc, Lead
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.
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.
Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
---|---|---|
2.28549 | 42A09SW2027 | 42A09SW2027 |
KL-4217 | 42A09SW0174 | 42A09SW0174 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Tectonic Assemblage: Stoughton-Roquemaure
Geological Age: Mesoarchean
Metamorphism Grade: Greenschist
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.
Rock Type | Rank | Composition | Texture | Relationship | Lamprophyre-Unsubdivided | 1 | Near |
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Diabase | 2 | Diabase | Near | |
Claystone | 3 | Argillite | Weakly Foliated | Adjacent |
Mafic lava flow-unsubdivided | 4 | Basalt | Variolitic | Host |
Vein | 5 | Quartz-Hematite-Pyrite | Contains |
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.
Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
---|---|---|---|---|---|---|---|
1 | Gold | Economic | Ore | ||||
2 | Pyrite | Economic | Ore | ||||
3 | Specularite | Economic | Ore | ||||
1 | Quartz | Economic | Gangue | ||||
2 | Calcite | Economic | Gangue | ||||
3 | Dolomite | Economic | Gangue | ||||
4 | Ankerite | Economic | Gangue | ||||
5 | Hematite | Economic | Gangue | ||||
Hematite | Alteration | Unknown | 1 | Weak | Veins | ||
Dolomite | Alteration | Carbonatization | 2 | Weak | Replacement | ||
Sericite | Alteration | Sericitization | 3 | Unknown | Replacement | ||
Ankerite | Alteration | Carbonatization | 4 | Unknown | Replacement | ||
Calcite | Alteration | Carbonatization | 5 | Medium | Veins | ||
Specularite | Alteration | Unknown | 6 | Weak | Veins |
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.
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.
Rank | Classification |
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1 | Hydrothermal |
Rank | Characteristic |
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1 | Vein |
Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
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Irregular |
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.
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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