Ontario Geological Survey
Permanent Link to this Record:
MDI41I15SE00007
| Record Name(s) | Comstock Prospect - 1979, J. Gill Property - 1982, Crystal-Comstock Mine - 1925, Mining Location WR 40 - 1897 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1984-Sep-28 |
| Date Last Modified | 2022-Jan-27 |
| Created By | |
| Revised By |
Primary Commodities: Gold, Copper
Secondary Commodities: Nickel
Township or Area: Rathbun
Latitude: 46° 45' 4.62" Longitude: -80° 37' 28.95"
UTM Zone: 17 Easting: 528664.002 Northing: 5177593.996 UTM Datum: NAD83
Resident Geologist District: Sudbury
NTS Grid: 41I15SE
Point Location Description: capped shaft
Location Method: AMIS Site Visit
Access Description: 28km from Hwy 17 nort on Kukagami Lake road to a road heading north. Keep right on road for 0.6km to a turn around area. Site is located at west end and north of turn around.
1925: Crystal-Comstock Gold Mines Ltd. - Comstock and Crystal Properties Amalgamated, No. 4 shaft deepened to 210 feet, underground development. 1943-44: Sylvanite Gold Mines Ltd. - shaft dewatered, sampling. 1963-70 - Little A.G. Mines - ground geophysics, mapping, DD
Province: Southern
Supergroup: Huronian Supergroup
Geological Age: Paleoproterozoic
Mar 26, 2010 (A Wilson) - Strong albite-sericite-ankerite-altered wacke and Sudbury breccia are located within massive wacke of the Gowganda Fm. All units are intruded by Nipissing diabase. Narrow quartz veins trending WNW are restricted to the zone of alteration. The main vein strikes 305° and dips 65°S. The vein is 30-50 cm wide and is composed of massive quartz and ankerite.
| Rock Type | Rank | Composition | Texture | Relationship | Gabbro | 1 | Gabbro | Near |
|---|---|---|---|---|
| Vein | 2 | Quartz-Carbonate | Host | |
| Wacke | 3 | Adjacent | ||
| Breccia-unsubdivided | 4 | Sudbury Breccia | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 2 | Pyrite | Economic | Gangue | ||||
| 3 | Chalcopyrite | Economic | Gangue | ||||
| 4 | Galena | Economic | Gangue | ||||
| 5 | Bornite | Economic | Gangue |
Mar 26, 2010 (A Wilson) - The average of the bulk sample taken by Sylvanite at the 110 ft level is about 0.28 oz/t gold over 1.05 ft for a length of 115 feet. Samples from the other veins range from trace to 1.10 oz/t over 0.5 feet. A grab sample collected by B. Gates (OGS) from a quartz vein in 1988 returned 4.26% Cu, anomalous nickel (585 ppm) and an average of 4695 ppb gold.
| Rank | Classification |
|---|---|
| 1 | Vein |
Map - Geological series, Rathbun Township, District of Sudbury
Publication Number: P1609 Scale: 1:15,840 Date: 1978
Author: Dressler B.O.
Publisher Name: Ontario Geological Survey
Location:
Map - Massey Bay, Sudbury District
Publication Number: M2451 Scale: 1:31,680 Date: 1982
Author: Dressler B.O.
Publisher Name: Ontario Geological Survey
Location:
Part - Seventh report of the Inspector of Mines
Publication Number: ARV06.010 Scale: Date: 1998
Author: Slaght A.
Publisher Name: Ontario Bureau of Mines
Location:
Map - Sudbury data series, Rathbun Township, Sudbury District
Publication Number: P2197 Scale: 1:15,840 Date: 1982
Author: Adlington R.
Publisher Name: Ontario Geological Survey
Location:
Mono - Gold deposits of Ontario, part 2, part of District of Cochrane, districts of Muskoka, Nipissing, Parry Sound, Sudbury, Timiskaming, and counties of southern Ontario
Publication Number: MDC018 Scale: Date: 1979
Author: Gordon J.B., Lovell H.L., de Grijs J.W., Davie R.F.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Wanapitei Lake area, District of Sudbury
Publication Number: R213 Scale: Date: 1982
Author: Dressler B.O.
Publisher Name: Ontario Geological Survey
Location:
Folio - Rathbun Township, District of Sudbury
Publication Number: GDIF316 Scale: Date: 1997
Author: Sudbury RGO
Publisher Name: Ontario Geological Survey
Location:
Mono - Sudbury mineral occurrence study
Publication Number: OFR5771 Scale: Date: 1991
Author: Gates B.I.
Publisher Name: Ontario Geological Survey
Location:
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