Ontario Geological Survey
Permanent Link to this Record:
MDI42E11NE00006
| Record Name(s) | Tombill Mine - 1938, Tom Johnson Claims - 1933 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Past Producing Mine Without Reserves or Resources |
| Date Created | 1980-Feb-13 |
| Date Last Modified | 2022-May-09 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Silver
Township or Area: Lindsley
Latitude: 49° 41' 52.66" Longitude: -87° 5' 11.3"
UTM Zone: 16 Easting: 493764 Northing: 5505053 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42E11NE
Point Location Description: Minesite
Location Method: AMIS Site Visit
Access Description: The property is located on the eastern boundary of Lindsley Township, immediately north of Trans Canada Highway 11. The past-producer is located 11.3 km west of the turn-off to Geraldton (Highway 584) along Highway 11, and is within 250 m of the highway.
1931: The property was staked by T.S. Vipond. 1932: Claims cancelled and restaked. 1933-34: Work was performed and the six claims were patented. 1935: Tombill Gold Mines Ltd. was formed. 1936: Considerable diamond drilling, shaft sinking to 121.9 m, and lateral underground work were performed. The first ore hoisted was milled by Bankfield Consolidated Mines Ltd. 1937: Lateral work con't, and a 100 ton concentrating mill was constructed. 1938: Underground dev't con't; mill began operations. Addition of a cyanide unit increased capacity to 120 tons per day. 1939-41: Underground dev't con't, as did milling. In 1940, an agreement allowing Bankfield Consolidated Mines Ltd. to explore and develop a block below the 152.4 m level was arranged. 1942: Underground dev't con't. Underground drilling (311.5 m) was carried out. The ore reserves were exhausted and the mill shut down. 1955: Mill clean up resulted in the production of 23 oz of Au and 1 oz of Ag. 1974: Mag and EM surveys were conducted. 1982: Tombill carried out linecutting, and VLF-EM and magnetometer surveys. 2014: Premier Gold Mines Ltd. purchased the surface rights for adjacent claims from Tombill Mines.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.4136 | 42E10NW0174 | 42E10NW0174 |
Province: Superior
Subprovince: Wabigoon
Belt: Beardmore-Geraldton
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The oldest rocks in the vicinity of the mine are clastic sediments, which, in this area, consist essentially of alternating beds of medium-grained, massive greywacke and fine-grained, slaty greywacke. Overlying these to the north are conglomerate, greywacke, black slate, and iron formation. Intrusive rocks include diorite, quartz albite prophyry and diabase, which cuts all other rock formations as a very prominent dyke. The mineralized zone is mainly sheared and fractured greywacke and porphyry impregnated with silica and small amounts of metallic minerals. To a lesser extent there are definite quartz veins in the ore zone.
| Rock Type | Rank | Composition | Texture | Relationship | Sandstone | 1 | Greywacke | Sheared | Host |
|---|---|---|---|---|
| Porphyry-unsubdivided | 2 | Sheared | Host | |
| Vein | 3 | Quartz | Host | |
| Mudstone | 4 | Near | ||
| Ironstone-unsubdivided | 5 | Near | ||
| Diorite | 6 | Diorite | Near | |
| Diabase | 7 | Diabase | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Arsenopyrite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Gold | Economic | Ore | ||||
| 4 | Pyrite | Economic | Ore | ||||
| 5 | Pyrrhotite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Quartz | Alteration | Silicification | 1 | Unknown | Disseminated |
Dec 07, 2005 (B Nelson) - Metallic minerals are predominantly py, asp, po and native gold. Also present is ilmenite. Samples taken in 1982 yielded assay results of 0.24 oz/ton Au and 0.23 oz/ton Au from tailings.
Date: Jan 29, 1997
Geologist: B Nelson
Notes: The Beardmore-Geraldton Economic Geologist visited the minesite in September of 1981.
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1942 | 172929 |
Silver 8595 Ounces Gold 69120 Ounces |
OFR 5630 | Last year of Production: 1942. Mine operation: 1938-1942. Mine clean-up: 1955. (Au = 23 oz, Ag = 1oz). Total Production (including 1955 clean-up) (tons milled) = 190,622 (172,929 tonnes). Au = 69,120 oz @ 0.36 oz/t. Ag = 8,595 oz. |
Map - Little Long Lac gold area, District of Thunder Bay, Ontario
Publication Number: ARM44D Scale: 1:31,680 Date: 1997
Author: Bruce E.L.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Gold occurrences, prospects, and deposits of the Beardmore-Geraldton area, districts of Thunder Bay and Cochrane
Publication Number: OFR5630 Page: 582-584 Date: 1986
Author: Mason J.K., White G.D.
Publisher Name: Ontario Geological Survey
Location:
Map - Mineral deposits series, Ontario mineral potential, Longlac sheet, districts of Thunder Bay and Cochrane
Publication Number: P1527 Scale: 1:250,000 Date: 1978
Author: Springer J.S.
Publisher Name: Ontario Geological Survey
Location:
Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay
Publication Number: MDC013 Page: 279-280 Date: 1971
Author: Ferguson S.A., Groen H.A., Haynes R.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
Part - Little Long Lac gold area
Publication Number: ARV44-03 Date: 1997
Author: Bruce E.L.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Tashota-Geraldton sheet, geological compilation series, Thunder Bay and Cochrane districts
Publication Number: M2102 Date: 1997
Author: Pye E.G., Harris F.R., Fenwick K.G., Baillie J.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Geology of Errington Township, Little Long Lac area
Publication Number: ARV60-06 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
File - Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
Map - Thunder Bay data series, Lindsley Township area, Thunder Bay District
Publication Number: P2519 Scale: 1:15,840 Date: 1982
Author: Love W.D.
Publisher Name: Ontario Geological Survey
Location:
Part - Mines of Ontario in 1938
Publication Number: ARV48-01.003 Page: 18, 209 Date: 1997
Author: Sinclair D.G., Cave A.E., Tower W.O., Taylor J.B., Douglass D.P., Bayne A.S., Cooper D.F., Weir E.B., Webster A.R.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Statistical review of the mineral industry for 1956
Publication Number: ARV66-01.001 Page: 15 Date: 1997
Author: Arnoldi M.G.
Publisher Name: Ontario Dept. of Mines
Location:
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