Ontario Geological Survey
Permanent Link to this Record:
MDI31M05SE00136
| Record Name(s) | Mitchell-Callahan Prospect - 1957, Cummings - 1980 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1980-Sep-18 |
| Date Last Modified | 2022-Dec-06 |
| Created By | |
| Revised By |
Primary Commodities: Silver, Lead
Secondary Commodities: Gold, Copper, Zinc
Township or Area: Gillies Limit
Latitude: 47° 21' 11.61" Longitude: -79° 40' 37.76"
UTM Zone: 17 Easting: 599904.63 Northing: 5245266.48 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M05SE
Point Location Description: Lot: Claim T-19492 Conc: Block 2
Location Method: Data Compilation
1960: H. Sutherland – DD-1-100.2 ft. 1966: Diana Explorations Ltd. – geological mapping; 1998: R.A. Gilson – mechanical stripping; sampling, assays. 2004: S. Sears – stripping; sampling of Cummings Pit. AU,AG ASSAYS: GALENA ASSAYED 857-1200 G/T AG; CHALCOPYRITE 10.3 G/T AU, REF INDEX: (2) NOTES, CLIPPING.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 26 | 31M05SE0063 | 31M05SE0063 |
| 63A.480 | 31M05SE0089 | 31M05SE0089 |
| 2.28255 | 31M05SE2068 | 31M05SE2068 |
| 2.18482 | 31M05SE2001 | 31M05SE2001 |
| 2.27941 | 31M05SE2067 | 31M05SE2067 |
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Formation Group: Cobalt Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Massive, Pillowed | Hanging Wall |
|---|---|---|---|---|
| Terrigenous-Clastic-Unsubdivided | 2 | Huronian | Hanging Wall | |
| Gabbroid-Unsubdivided | 3 | Host | ||
| Vein | 4 | Calcite | Contains |
Aug 11, 2017 (A Wilson) - The data shows an east-west trending, calcite-quartz breccia vein zone ranging in width from 0.1 to 1.0 metre wide. The zone is steeply dipping to vertical and has a 1 metre to 3 metre wide fractured envelope showing calcite-quartz alteration. Associated with the vertical vein are a number of "flat" calcite veins from cm scale to 0.3 metres thick. Both the vertical vein system and the flat veins contain galena, chalcopyrite and sphalerite as course patches and grains. Four additional samples were collected from the vertical vein system with results unavailable at this time.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Galena | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Bornite | Economic | Ore | ||||
| 4 | Sphalerite | Economic | Ore |
Aug 11, 2017 (A Wilson) - At the Cumming Pits, the vein is massive recrystallized calcite with irregular pods of galena, chalcopyrite, bornite, brown to black sphalerite in bleached, chloritized Nipissing diabase. In the North Trench, a sugary calcite vein with quartz near the margins is associated with a breccia zone up to 1.3 m wide. Locally, the vein is strongly mineralized with galena, sphalerite and smithsonite. Coarse amphibole is abundant within the breccia zones. Old trenches, some containing similar style mineralization, are common on the property. Au,Ag Assays: Galena assayed 857-1200 g/t Ag; Chalcopyrite 10.3 g/t Au, REF INDEX: (2) NOTES, CLIPPING. Six (6) grab samples were collected from the showing area on May l, 2004 (See results in Appendix I). Three of the samples (211551 to 211553) contained in excess of 100 g/t silver. Two contained significant gold values (211553 @ 7.09 g/t and 211554 @ 25.27 g/t).
| Rank | Classification |
|---|---|
| 1 | Vein (Cobalt-Type) |
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Page: 358 Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Cobalt silver area, southwestern sheet, Timiskaming District
Publication Number: M2051 Scale: 1:12,000 Date: 1997
Author: Thomson R.
Publisher Name: Ontario Dept. of Mines
Location:
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