Ontario Geological Survey
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MDI42A08NW00109
| Record Name(s) | F. Mobb Property - 1905, Mobb Occurrence - 1971, M. Gray Property - 1974 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1983-Dec-16 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Gold, Silver
Secondary Commodities: Molybdenum
Township or Area: Playfair
Latitude: 48° 24' 43.37" Longitude: -80° 21' 59.87"
UTM Zone: 17 Easting: 546869 Northing: 5362293 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 42A08NW
Point Location Description: Quartz vein
Location Method: Data Compilation
Access Description: A point 5.37 km north and 4.00 km east of the southwest corner of Playfair Township.
1905-1909: F. Mobb : test pitting (2 pits), sampling. 1974: M. Gray - blasting, sampling, DD-2-130.5 m.
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Geological Age: Archean
Metamorphism Grade: Greenschist
Apr 20, 2016 (C Salo) - Geological mapping iindicates that bedrock in the occurrence area consists mainly of weakly metamorphosed (greenschist or lower metamorphic facies except marginal to intrusive bodies, where contact metamorphic aureoles of amphibolite grade may be developed) subaqueously deposited tholeiitic basalt of the (Archean) Kinojevis Group which strikes east northeast, dips steeply, and faces south. The bedrock volcanic stratigraphy occupies part of the north limb of the east striking and east plunging Blake River Synclinorium. Intrusive rocks in the area include alkalic stocks and dikes and narrow (generally tens of metres in width) diabase dikes of the (Proterozoic) Matachewan swarm. A recent geophysical survey of Playfair Township failed to detect any significant bedrock conductors in the occurrence area.
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Quartz-Carbonate | Contains |
|---|---|---|---|---|
| Syenite | 2 | Biotite-Hornblende-Albite Syenite | Contains | |
| Feldspar Porphyry | 3 | Feldspar | Intrudes |
Apr 20, 2016 (A Wilson) - There are reportedly 3 parallel east-west trending quartz carbonate veins.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Chalcopyrite | Economic | Ore | ||||
| 6 | Molybdenite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Calcite | Economic | Gangue | ||||
| 3 | Pyrite | Economic | Gangue | ||||
| 4 | Carbonate | Economic | Gangue |
Apr 20, 2016 (C Salo) - Wright described the occurrence to consist of a system of 3 east striking and subvertically dipping quartz-calcite- pyrite-chalcopyrite-molybdenite veins which are hosted by coarse grained biotite hornblende albite syenite which is intruded by pink syenite dikes. A 4 foot long chip sample taken by Wright from this vein system is reported by him to have averaged $60 in gold (about 2.9 ounces of gold per ton) and 9 ounces of silver per ton; a second sample obtained by Wright, however, ...did not give such encouraging results. A northeast striking and northwest 45 degrees dipping quartz-magnetite vein in the area is reported by Wright to be oriented parallel pink syenite dikes and to intersect the auriferous vein system; no assays from this northeast striking vein are reported, although Wright described it to be barren. The high gold assay obtained by Wright and the erratic nature of the gold mineralization suggest that gold here occurs in the native state. Future sampling of veins in the area should utilize pulp and metallic or analogous analytical procedures which are designed to minimize the nugget effect and provide representative gold assay data.
| Rank | Classification |
|---|---|
| 1 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
Map - Geophysical/geochemical series, Matheson-Black River area, Playfair Township, airborne electromagnetic survey, total intensity magnetic survey, District of Cochrane
Publication Number: M80605 Scale: 1:20,000 Date: 1984
Author: Questor Surveys Ltd.
Publisher Name: Ontario Geological Survey
Location:
Part - Geology of the Watabeag area
Publication Number: ARV31-07 Page: 20 Date: 1998
Author: Wright D.G.H.
Publisher Name: Ontario Dept. of Mines
Location:
Folio - Playfair Township, District of Cochrane
Publication Number: GDIF344 Date: 1997
Author: Kirkland Lake RGO
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, Quaternary geology of the Ramore area, districts of Cochrane and Timiskaming
Publication Number: P2381 Scale: 1:50,000 Date: 1980
Author: Baker C.L., Seaman A.A., Steele K.G.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, Precambrian geology, Ramore area, northwestern part, District of Cochrane
Publication Number: P2860 Scale: 1:15,840 Date: 1985
Author: Jensen L.S.
Publisher Name: Ontario Geological Survey
Location:
Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay
Publication Number: MDC013 Page: 135 Date: 1971
Author: Ferguson S.A., Groen H.A., Haynes R.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Map - Geological series, preliminary results of bedrock samples from the sonic drilling, 1985, Lake Abitibi-Matheson area, District of Cochrane
Publication Number: P2986 Scale: 1:100,000 Date: 1986
Author: Jensen L.S., Steele K.G., McClenaghan M.B., Baker C.L.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology and petrogenesis of the Archean Abitibi belt in the Kirkland Lake area, Ontario
Publication Number: MP123 Date: 1985
Author: Jensen L.S., Langford F.F.
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 - Quaternary geology and geochemical exploration in the Matheson area
Publication Number: MP140.294 Date: 1997
Author: McClenaghan M.B., Lavin O.P., Nichol I., Shaw J.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, Precambrian geology, Ramore area, districts of Cochrane and Timiskaming
Publication Number: P3131 Scale: 1:63,360 Date: 1989
Author: Jensen L.S.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological Compilation of the Central Abitibi Greenstone Belt: Kapuskasing Structural Zone to the Quebec Border
Publication Number: P3565 Scale: 1:250,000 Date: 2005
Author: Ayer J.A., Berger B.R., Hall L.A.F., Houlé M.G., Johns G.W., Josey S.D., Madon Z.B., Rainsford D.R.B., Trowell N.F., Vaillancourt C.
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:
Mono - Preliminary report on the Timmins-Kirkland Lake area, gold deposits file
Publication Number: OFR5467 Page: G0083 Date: 1983
Author: Hodgson C.J.
Publisher Name: Ontario Geological Survey
Location:
Mono - Mineral occurrences, deposits, and mines of the Black River-Matheson area
Publication Number: OFR5735 Page: 1165-1169 Date: 1990
Author: Bath A.C.
Publisher Name: Ontario Geological Survey
Location:
Article - Reconnaissance till sampling program, Matheson-Lake Abitibi area, District of Cochrane
Publication Number: MP141.081 Page: 472-477 Date: 1997
Author: Steele K.G.
Publisher Name: Ontario Geological Survey
Location:
Article - Quaternary geology and geochemical exploration in the Matheson area
Publication Number: MP136.294 Date: 1997
Author: McClenaghan M.B., Lavin O.P., Nichol I., Shaw J.
Publisher Name: Ontario Geological Survey
Location:
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