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Ontario Geological Survey
Permanent Link to this Record:
MDI31M05SE00020
| Record Name(s) | Brady Claim - 1904, Rochester Cobalt Mines Ltd. & Pan Silver - 1906, Lumsden Mining Company - 1909, Silmil - 1980, Brady Cross Lake Silver Mines Ltd. - 1968, Preston East Dome Mines Ltd. - 1950, Silver Miller - 1980 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Past Producing Mine Without Reserves or Resources |
| Date Created | 1980-Sep-30 |
| Date Last Modified | 2023-Oct-27 |
| Created By | |
| Revised By |
Primary Commodities: Silver, Cobalt
Secondary Commodities: Copper
Township or Area: Coleman
Latitude: 47° 21' 31.15" Longitude: -79° 38' 53.42"
UTM Zone: 17 Easting: 602083 Northing: 5245907 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M05SE
Point Location Description: Silver Miller Shaft.
Location Method: AMIS Site Visit
1904: Mr. Brady - surface prospecting including the development of several pits was done. 1906: Rochester Claim: Rochester Cobalt Mines Ltd.; 1906-1960:Lumsden Claim - Lumsden Mining Co. Ltd.; 4 shafts 1919: leased to Camburn Silver Mines. 1915: Tretheway Silver Cobalt Mines Ltd.; 1947 Silver Miller Mines Ltd.1961-63: development included 71 ft. of drifting; 208 ft. of raisings and 37 UGDD-4845 ft.; 1980 tons of ore hoisted; property leased to Agnico Mines Ltd. 1964-67: 28-UGDD-5320 ft.
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Formation Group: Cobalt Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Olivine Gabbro | 1 | Olivine | Host |
|---|---|---|---|---|
| Olivine Gabbro | 2 | Olivine | Host | |
| Terrigenous-Clastic-Unsubdivided | 3 | Cobalt Series | Footwall |
Jul 31, 2017 (A Wilson) - Keewatin rocks cut by Hailyburian andesite dikes are intruded by Nipissing diabase sill; about 1160 ft. thick. The Columbus quartz diabase dike of Keweenawan age striking northwest with steep SW dip intrudes the sill and Keewatin. Three faults traverse the property: the Columbus Fault striking NW with a vertical displacement of 30ft.; the Badger Fault striking NE with 30ºSE dip and the Brady Lake Fault striking north with 80ºE dip. Three important vein systems occur; No. 2 vein system (Rochester claim); C-4 vein system (Pan Silver claim) and Lumsden vein. The productive zone was in proximity to the Keewatin-Upper Nipissing diabase contact. Base metal mineralization such as chalcopyrite, niccolite, sphalerite, galena and pyrite occurs as disseminated sulphides.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Silver | Economic | Ore | ||||
| 3 | Chalcopyrite | Economic | Gangue | ||||
| 4 | Sphalerite | Economic | Gangue | ||||
| 5 | Galena | Economic | Gangue | ||||
| 6 | Pyrite | Economic | Gangue |
Jul 31, 2017 (A Wilson) - Of the several small (up to l inch wide) discontinuous veins striking in different directions possibly a few with strikes about N65W, are more marked. The vein structures are weak and appear to be mere joints a The gangue is quartz and calcite and contains a little chalcopyrite,, The showing was regarded as indicative of a northwest-striking zone of veins, not as a single mineralized vein, to be traced downward to what was hoped would prove to be a productive horizon in the vicinity of the lower diabase contact. The drilling showed the presence of numerous small calcite veinlets but apparently no silver or cobalt mineralization was definitely seen in the core; a number of low(less than 10 oz. per ton) assays were obtained and in drill hole No l from a sample between footages 239.2 and 239.7 an assay of 16.8 oz. silver per ton was reported by Hart.
| Rank | Characteristic |
|---|---|
| 1 | Vein |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1960 | 1 |
Silver 469900 Ounces Cobalt 19540 Pounds Copper 35018 Pounds Nickel 3543 Pounds |
PR1961-07 p.45 | No tonnage reported. Production by Silver-Miller Mines Ltd. |
| 1959 | 1 |
Silver 87779 Ounces Cobalt 5050 Pounds Copper 4240 Pounds Nickel 917 Pounds |
PR1961-07 p.45 | No tonnage reported. Production by Silver-Miller Mines Ltd. |
| 1958 | 1 |
Silver 936880 Ounces Cobalt 40934 Pounds Copper 26316 Pounds Nickel 7433 Pounds |
PR1961-07 p.45 | No tonnage reported. Production by Silver-Miller Mines Ltd. |
| 1957 | 1 |
Silver 859237 Ounces Cobalt 169700 Pounds Copper 248500 Pounds Nickel 72000 Pounds |
PR1961-07 p.45 | No tonnage reported. Production by Silver-Miller Mines Ltd. |
| 1956 | 1 |
Silver 1198628 Ounces Cobalt 254752 Pounds Copper 365574 Pounds Nickel 86315 Pounds |
PR1961-07 p.45 | No tonnage reported. Production by Silver-Miller Mines Ltd. |
| 1955 | 1 |
Silver 1405373 Ounces Cobalt 680304 Pounds Copper 16431 Pounds Nickel 246757 Pounds |
PR1961-07 p.45 | No tonnage reported. Production by Silver-Miller Mines Ltd. |
| 1954 | 1 |
Silver 920113 Ounces Cobalt 677979 Pounds Copper 24842 Pounds Nickel 289292 Pounds |
PR1961-07 p.45 | No tonnage reported. Production by Silver-Miller Mines Ltd. |
| 1953 | 1 |
Silver 464060 Ounces Cobalt 443029 Pounds Copper 3001 Pounds Nickel 280706 Pounds |
PR1961-07 p.45 | No tonnage reported. Production by Silver-Miller Mines Ltd. |
| 1952 | 1 |
Silver 1309811 Ounces Cobalt 215706 Pounds Copper 9437 Pounds |
PR1961-07 p.45 | No tonnage reported. Production by Silver-Miller Mines Ltd. |
| 1951 | 31869 |
Silver 1630424 Ounces Cobalt 91279 Pounds Copper 11320 Pounds |
PR1961-07 p.45 | Production by Silver-Miller Mines Ltd. |
| 1950 | 5676 |
Silver 1813712 Ounces Cobalt 61372 Pounds Nickel 8620 Pounds |
PR1961-07 p.45 | Production by Silver-Miller Mines Ltd. |
| 1949 | 6353 |
Silver 474032 Pounds Cobalt 23675 Pounds |
PR1961-07 p.45 | Production by Silver-Miller Mines Ltd. |
| 1948 | 3972 |
Silver 123637 Ounces Cobalt 5134 Pounds |
PR1961-07 p.45 | Production by Silver-Miller Mines Ltd. |
| 1947 | 2432 |
Silver 171494 Ounces Cobalt 1379 Pounds |
PR1961-07 p.45 | Production by Silver-Miller Mines Ltd. |
| 1942 | 1 |
Silver 264 Ounces Cobalt 420 Pounds |
PR1961-07 p.44 | Tonnage not reported |
| 1942 | 1 |
Silver 110 Ounces Cobalt 92 Pounds |
PR1961-07 p.45 | Tonnage not reported |
| 1940 | 1 |
Silver 21 Ounces Cobalt 151 Pounds |
PR1961-07 p.44 | Tonnage not reported |
| 1939 | 1 |
Silver 104 Ounces Cobalt 300 Pounds |
PR1961-07 p.44 | Tonnage not reported |
| 1938 | 1 |
Silver 58 Ounces Cobalt 350 Pounds |
PR1961-07 p.44 | Tonnage not reported |
| 1937 | 11 |
Silver 1192 Ounces Cobalt 2156 Pounds |
PR1961-07 p.44 | |
| 1936 | 3 |
Silver 509 Ounces Cobalt 4187 Pounds |
PR1961-07 p.44 | |
| 1930 | 1 |
Silver 33 Ounces Cobalt 146 Pounds |
PR1961-07 p.45 | Tonnage not reported |
| 1921 | 1 |
Silver 933 Ounces |
PR1961-07 p.45 | Tonnage not reported |
| 1918 | 1 |
Silver 2026 Ounces |
PR1961-07 p.45 | Tonnage not reported |
| 1916 | 1 |
Silver 1763 Ounces |
PR1961-07 p.44 | Tonnage not reported |
| 1913 | 17 |
Silver 18128 Ounces |
PR1961-07 p.45 | |
| 1910 | 1 |
Silver 11696 Ounces |
PR1961-07 p.44 | Tonnage not reported. |
File - Resident Geologist files CO-0706, CO-0763, CO-0794
Publication Number: Date:
Author:
Publisher Name:
Location: Kirkland Lake RGP office
Map - Cobalt silver area, southeastern sheet, Timiskaming District
Publication Number: M2052 Scale: 1:12,000 Date: 1997
Author: Thomson R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Silver cobalt calcite vein deposits of Ontario
Publication Number: MDC010 Page: 84-86, 92-93 Date: 1968
Author: Sergiades A.O.
Publisher Name: Ontario Dept. of Mines
Location:
Book - Northern Miner 79-03-29, Deep Ore Sources, p. 3
Publication Number: NMINER Date: 1979
Author:
Publisher Name: Northern Miner
Location: Kirkland Lake RGP office
Mono - Preliminary report on parts of Coleman Township, concession 3, lots 1 to 3, and Gillies Limit, blocks 1 and 2; claims A 48 to 58 and A 88 to 100, District of Timiskaming
Publication Number: PR1961-07 Page: 38-51 Date: 1998
Author: Thomson R.
Publisher Name: Ontario Dept. of Mines
Location:
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