Ontario Geological Survey
Permanent Link to this Record:
MDI31M12SE00003
| Record Name(s) | Dolphin-Miller Shaft - 1958, Harmak Shaft - 1914, Casey Cobalt - 1915 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect Without Reported Reserves or Resources |
| Date Created | 1980-Dec-18 |
| Date Last Modified | 2022-Jul-19 |
| Created By | |
| Revised By |
Primary Commodities: Cobalt, Silver
Township or Area: Harris
Latitude: 47° 34' 34.28" Longitude: -79° 35' 1.32"
UTM Zone: 17 Easting: 606511.002 Northing: 5270168.999 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M12SE
Point Location Description: Dolphin-Miller Shaft.
Location Method: AMIS Site Visit
Access Description: Follow highway 65 from New Liskeard, turn north towards Langis Mine , turn east into Langis Mine access road and then turn south after crossing the tailings.
1914: Harmak Mining Company - shaft sinking. 1918: Casey Cobalt Silver Mining Company - shaft deepened, underground development, underground diamond drilling. 1958-65: Dolphin-Miller Mines Limited - prospecting, DD, mine in production between 1964 and 1965.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 11 | 31M12SE0013 | 31M12SE0013 |
Province: Southern
Subprovince: Cobalt Basin
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Wacke | 1 | Hanging Wall |
|---|---|---|---|---|
| Conglomerate | 2 | Hanging Wall | ||
| Vein | 3 | Calcite | Host | |
| Diabase | 4 | Diabase | Contains |
Jul 07, 2010 (A Wilson) - The diabase sill intrudes into flat-lying conglomerate and greywacke. The mine is situated at the intersection of a northwest striking fault and a northeast-striking vein. A nearly horizontal fault (Casey Fault) reportedly passes through the shaft at about 250 feet below the shaft collar.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 2 | Silver | Economic | Ore |
Jul 07, 2010 (A Wilson) - Dolphin-Miller Mines Limited intersected 1635 oz/t Ag over ½ inch of core in drill hole U3.
| Rank | Classification |
|---|---|
| 1 | Vein (Cobalt-Type) |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1965 | 1210 |
Silver 19739 Ounces Cobalt 5868 Pounds |
AR75 p. 132 | 1334 tons of development ore returned 4625 ounces Ag, 12,925 lbs Co |
Book - Northern Miner 79-03-29, Better Days, p. 3
Publication Number: NMINER Date: 1979
Author:
Publisher Name: Northern Miner
Location:
Map - Casey and Harris townships, Timiskaming District
Publication Number: M2066 Scale: 1:31,680 Date: 1997
Author: Thomson R.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of Casey and Harris townships, District of Temiskaming
Publication Number: R036 Page: 63-34 Date: 1997
Author: Thomson R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Silver cobalt calcite vein deposits of Ontario
Publication Number: MDC010 Page: 324 Date: 1968
Author: Sergiades A.O.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Annual report for the year 1965, statistics of the mineral industry and mining operations in Ontario for 1965
Publication Number: ARV75 Page: 131-132 Date: 1997
Author: Riddell G.S.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Mines of Ontario
Publication Number: ARV24-01.003 Page: 109 Date: 1998
Author: Sutherland T.F., Collins E.A., McMillan J.G., Bartlett J.
Publisher Name: Ontario Bureau of Mines
Location:
Part - Mines of Ontario
Publication Number: ARV28-01.003 Page: 133-134 Date: 1998
Author: Sutherland T.F., Collins E.A., Stovel J.H., Webster A.R.
Publisher Name: Ontario Bureau of Mines
Location:
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For detailed information regarding this mineral record please contact the Kirkland Lake Resident Geologist District Office