Ontario Geological Survey
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MDI42A09SW00179
| Record Name(s) | Black River Occurrence - 1919 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1992-Mar-06 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Copper
Township or Area: Carr
Latitude: 48° 32' 33.11" Longitude: -80° 27' 35.38"
UTM Zone: 17 Easting: 539870 Northing: 5376744 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 42A09SW
Point Location Description: inclined shaft
Location Method: AMIS Site Visit
Access Description: Proceed 300m east of Matheson on highway 101, then travel 137m north through bush to the site located at the bottom of a ravine.
1919: Knight et al. reported that narrow quartz veins hosted by pillowed lava intruded by porphyry carrying low gold values occur in this area. 1952: Prest reported that by this time a 50-75 foot deep inclined shaft had been sunk on a 6 inch wide quartz- carbonate vein mineralized with pyrite and chalcopyrite which was hosted by sheared fine grained volcanic rocks.
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Abitibi
Geological Age: Mesoarchean
Metamorphism Grade: Greenschist
Jan 20, 2016 (R Degagne) - Geological mapping indicates that bedrock underlying southern Carr Township consists of weakly metamorphosed (greenschist or lower metamorphic facies) east striking and steeply dipping tholeiitic and komatiitic volcanic rocks of the (Archean) Stoughton-Roquemaure Group. The shaft is several hundred metres south of the interpreted position of the Porcupine-Destor Fault Zone and is blasted into rocks which occupy part of the north limb of the east striking and east plunging Blake River Synclinorium.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Veined | Aphanitic, Locally Brecciated, Pillowed | Host |
|---|---|---|---|---|
| Porphyry-unsubdivided | 2 | Albite | Near | |
| Quartz Diorite | 3 | Quartz Diorite | Near | |
| Diabase | 4 | Diabase | Near | |
| Olivine Gabbro | 5 | Olivine Diabase | Near | |
| Vein | 6 | Quartz-Carbonate, Gold-Bearing | Contains |
Jan 20, 2016 (R Degagne) - Bedrock exposure in the shaft area is scarce; well over 95% of bedrock in the southern Carr Township area is mantled by thick and locally complex glaciolacustrine deposits. Intrusive rocks in the area include bodies of albite granite, quartz diorite, narrow (tens of metres in width) north striking diabase dikes of the (Proterozoic) Matachewan swarm and narrow (tens of metres in width) northeast striking olivine diabase dikes of the (Proterozoic) Abitibi swarm. A recent electromagnetic survey of Carr Township failed to detect any significant bedrock conductors in the shaft area. Grab samples from waste rock piles around the shaft consist of sheared and variably calcite and Fe-dolomite altered fine grained to aphanitic basalt and white feldspar phyric intermediate dike material. Vein material is rare in the waste rock piles or in outcrop. White quartz-calcite-epidote veinlets are developed in unsheared and unaltered aphanitic basalt and also occur as breccia fragments within sheared and variably carbonatized basalt. Sulfide minerals and anomalously elevated gold tenors are apparently not associated with such veinlets.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 4 | Sericite | Economic | Gangue | ||||
| 5 | Calcite | Economic | Gangue | ||||
| 7 | Dolomite | Economic | Gangue | ||||
| 8 | Albite | Economic | Gangue | ||||
| 9 | Chlorite | Economic | Gangue | ||||
| Calcite | Alteration | Carbonatization | 1 | Strong | Replacement | ||
| Dolomite | Alteration | Carbonatization | 2 | Strong | Replacement | ||
| Chlorite | Alteration | Chloritic | 3 | Strong | Veins | ||
| Leucoxene | Alteration | Unknown | 4 | Unknown | Replacement | ||
| Epidote | Alteration | Saussuritization | 5 | Weak | Disseminated |
Dec 07, 2005 (R Degagne) - Grab samples from waste rock piles around the shaft consist of sheared and variably calcite and Fe-dolomite altered fine grained to aphanitic basalt and white feldspar phyric intermediate dike material. Vein material is rare in the waste rock piles or in outcrop. White quartz-calcite-epidote veinlets are developed in unsheared and unaltered aphanitic basalt and also occur as breccia fragments within sheared and variably carbonatized basalt. Sulfide minerals and anomalously elevated gold tenors are apparently not associated with such veinlets. Variably brecciated, fractured and boudinaged glassy grey quartz veinlets are preferentially associated with chloritic microshears developed within sheared Fe-dolomitized basalt and contain finely disseminated and seam controlled pyrite, specularite(?), and chalcopyrite splashes. Fine grained pyrite is also developed along the margins of the grey quartz veinlets and is associated with them in sheared basalt. Anomalously elevated gold and copper tenors are apparently preferentially associated with sheared and dolomitized basalt samples containing such grey quartz veinlets. The orientation of the shaft suggests that the auriferous grey quartz veinlet system and the shear which presumably hosts it strikes east and dips moderately (60 degrees) northward. The relationship between the veinlet mineralization observed in the dump samples and the north striking Matachewan diabase dike located a few tens of metres east of the shaft and the white feldspar phyric dike material which intrudes aphanitic basalt west of the shaft is not known.
Dec 07, 2005 (R Degagne) - Grab samples from waste rock piles around the shaft consist of sheared and variably calcite and Fe-dolomite altered fine grained to aphanitic basalt and white feldspar phyric intermediate dike material. A grab sample from the occurrence was previously reported to have averaged 0.12 ounce of gold per ton (NMI File 42A/09W Au 17). Sampling by the present writer confirmed the presence here of anomalous gold tenors (ranging from nil to as much as about 4 ppm of gold) and that these anomalous gold assays are apparently associated with strained sulfidic grey quartz vein material hosted by sheared chloritic and Fe-dolomitized basalt.
| Rank | Classification |
|---|---|
| 1 | Hydrothermal |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Irregular |
Date: Jan 17, 1997
Geologist: R Degagne
Notes: Visited in 1985 by A.C. Bath (OGS OFR 5735, Vol. 1, P.98). Analyses*: Sample: AB-85-78 320 Au ppb, 1040 Cu ppm, 73 Pb ppm, 99 Zn ppm. AB-85-79 nil Au ppb, --- Cu ppm, --- Pb ppm, --- Zn ppm. AB-85-80 30 Au ppb, 35 Cu ppm, 2 Pb ppm, 25 Zn ppm. AB-85-81 4350 Au ppb, 517 Cu ppm, 11 Pb ppm, 23 Zn ppm; 3980 Au ppb, --- Cu ppm, --- Pb ppm, --- Zn ppm; 4180 Au ppb, --- Cu ppm, -- Pb ppm, --- Zn ppm; 4180 Au ppb, --- Cu ppm, --- Pb ppm, --- Zn ppm. AB-85-82 20 Au ppb, 29 Cu ppm, 77 Pb ppm, 72 Zn ppm. AB-85-83 nil Au ppb, --- Cu ppm, --- Pb ppm, --- Zn ppm. AB-85-84 100 Au ppb, --- Cu ppm, --- Pb ppm, --- Zn ppm. AB-85-85 1350 Au ppb, --- Cu ppm, --- Pb ppm, --- Zn ppm; 1250 Au ppb, --- Cu ppm, --- Pb ppm, --- Zn ppm. AB-85-86 20 Au ppb, --- Cu ppm, --- Pb ppm, --- Zn ppm. AB-85-86 nil Au ppb, 764 Cu ppm, 18 Pb ppm, 31 Zn ppm. * Analyses performed by Swastika Laboratories Ltd., Swastika.
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:
Part - Abitibi-Night Hawk gold area, District of Timiskaming
Publication Number: ARV28-02.001 Page: 63 Date: 1998
Author: Knight C.W., Burrows A.G., Hopkins P.E., Parsons A.L.
Publisher Name: Ontario Bureau of Mines
Location:
Map - Geophysical/geochemical series, Matheson-Black River area, Carr Township, airborne electromagnetic survey, total intensity magnetic survey, District of Cochrane
Publication Number: M80584 Scale: 1:20,000 Date: 1984
Author: Questor Surveys Ltd.
Publisher Name: Ontario Geological Survey
Location:
Part - Geology of the Carr Township area
Publication Number: ARV60-04 Page: 20-21 Date: 1997
Author: Prest V.K.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Gold area between lakes Abitibi and Night Hawk, District of Timiskaming
Publication Number: ARM28B Scale: 1:126,720 Date: 1998
Author: Knight C.W., Burrows A.G., Hopkins P.E., Parsons A.L.
Publisher Name: Ontario Bureau of Mines
Location:
Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay
Publication Number: MDC013 Page: 125 Date: 1971
Author: Ferguson S.A., Groen H.A., Haynes R.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Folio - Carr Township, District of Cochrane
Publication Number: GDIF265 Date: 1997
Author: Kirkland Lake RGO
Publisher Name: Ontario Geological Survey
Location:
Map - Gold area between lakes Abitibi and Night Hawk, District of Timiskaming
Publication Number: ARM28B Scale: 1:126,720 Date: 1998
Author: Knight C.W., Burrows A.G., Hopkins P.E., Parsons A.L.
Publisher Name: Ontario Bureau of Mines
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:
Mono - Mineral occurrences, deposits, and mines of the Black River-Matheson area
Publication Number: OFR5735 Page: 97-103 Date: 1990
Author: Bath A.C.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Monteith Area
Publication Number: P3367 Scale: 1:50,000 Date: 1997
Author: Berger B.R.
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:
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:
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:
MonoMap - Geology and petrogenesis of the Archean Abitibi belt in the Kirkland Lake area, Ontario
Publication Number: OFR5455 Date: 1983
Author: Jensen L.S., Langford F.F.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Monteith Area
Publication Number: OFR6024 Page: 70 Date: 2000
Author: Berger B.R.
Publisher Name: Ontario Geological Survey
Location:
Article - A gravity survey in the Iroquois Falls-Lake Abitibi area, District of Cochrane
Publication Number: MP137.074 Date: 1997
Author: Gupta V.K., Johnstone R.M.
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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