Ontario Geological Survey
Permanent Link to this Record:
MDI52B10SE00008
| Record Name(s) | North Coldstream - 1952, Tip Top - 1917, Shield - 1984 |
|---|---|
| Related Record Type | Compound |
| Related Record(s) | |
| Record Status | Past Producing Mine Without Reserves or Resources |
| Date Created | 1984-Jul-26 |
| Date Last Modified | 2023-Apr-21 |
| Created By | |
| Revised By |
Primary Commodities: Copper
Secondary Commodities: Gold, Silver, Vanadium, Cobalt
Township or Area: Burchell Lake Area
Latitude: 48° 36' 6.6" Longitude: -90° 35' 4.69"
UTM Zone: 15 Easting: 678063.2 Northing: 5386011.3 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52B10SE
Point Location Description: Precise
Location Method: Other
Access Description: he former mine is accessed by a series of logging roads from Highway 802. The north part of the Property and the former Coldstream Mine can be accessed by the Burchell Lake Road, which branches from Highway 802 (access to the old mine is gated).
1870s: Discovery of the North Coldstream Mine. 1902 to 1917: New York and Canadian Copper Company Operated under the name of the Tip-Top Mine Produced 1,312,000 lb of Cu. 1943: Frobisher Exploration Company carried out geological mapping, trenching and drilling. 1950: Rio Canada Exploration completed drilled diamond drillhole (DDH)-1, geological mapping, vertical loop, electromagnetic and self-potential geophysical surveys. 1952 to 1955: Coldstream Copper Mines Ltd completed geological surveys on 71 patented claims covering the Goldie Zone and the future Osmani Gold Deposit. 1956: Burchell Lake Mines Ltd drilled 6 ddh on the Broadhurst Peninsula. 1957: Coldstream Copper Mines Ltd. operates North Coldstream Mine. 1960 to 1967: Noranda operates North Coldstream Mine producing 103 Mlb Cu, 22,000 oz Au and 440,000 oz Ag from 2.7 Mt of ore. 1987: Discovery West Corp. carried out trenching, line-cutting, IP and Magnetic surveys. 1988: A 14 hole drill program (2,118 m) was undertaken plus trenching-stripping. 1989: Lacana Mining Corporation optioned the property and conducted geological mapping and diamond drilling over the eastern extension of the Coldstream Mine. 1996: Newhawk Gold Mines Ltd. acquired the Coldstream property from Conwest.1999: J. Prochnau A Co. purchased the property. 2002: The Other Mining Company (U.S.) Inc. purchased the property. Alto Ventures Ltd. optioned the property from The Other Mining Co. (U.S.) Inc. Alto also staked twenty (20) mining claims adjoining the Coldstream Property to the south and west. Kinross Gold Corporation entered into an option agreement with Alto and completed 1,668 m of diamond drilling in seven holes on the Coldstream East deposit. 2009: Foundation Resources entered into agreement to acquire a 70% interest completing mapping, prospecting, trenching and drilling throughout the property. 2010: Foundation completed geophysical surveys and diamond over the East Coldstream. 2011: Foundation changed the name of the East Coldstream to the Osmani Gold Deposit drilling 53 DDH for 12,173 m, metallurgical testing and a resource estimate. Foundation entered into an agreement to acquire Alto’s remaining 40%. 2012: Foundation acquired a 100% interest in the Property. 2013: Foundation changed its name to Birch Hill Gold. 2014: Canoe Mining Ventures Corp amalgamated with Birch Hill Gold to form Coldstream Mineral Ventures Corp. Wesdome Gold Mines Ltd. acquired Moss Lake Gold Mines making it a wholly-owned subsidiary of Wesdome. 2016: Wesdome Gold Mines Ltd. purchased from Canoe Mining a 100% interest in the Coldstream and Hamlin Projects and placed them in the privately owned Moss Lake Gold Mines Ltd. 2017: Moss Lake Gold Mines conducted resistivity and IP surveys. 2021: Goldshore Resources acquired the Moss Lake property. 2022: Goldshore Resources carried out drilling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.53734 | 20000013648 | 20000013648 |
| 2.47569 | 20000006200 | 20000006200 |
| 2.31892 | 20000001255 | 20000001255 |
| 2.35482 | 20000002602 | 20000002602 |
| 2.10976 | 52B10SE0086 | 52B10SE0086 |
| 40 | 52B10SE0105 | 52B10SE0105 |
| 2.58456 | 20000015777 | 20000015777 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Shebandowan
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Gabbro | 1 | Silicified | Footwall |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Hanging Wall | ||
| Felsic lava flow-unsubdivided | 3 | Sericite | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Pyrrhotite | Economic | Ore | ||||
| 4 | Magnetite | Economic | Ore |
Feb 22, 2017 (Andrew Tims) - OGS sampling: M2622 #10 - 2.15 gpt Au, M2622 #12 - 1.06 gpt Au and 46200 ppm Cu in grab sample
Jan 28, 2019 (Therese Pettigrew) - Chalcopyrite and pyrite, sometimes accompanied by very subordinate pyrrhotite, constitute the sulphide minerals of the ore zone. The fine-grained sulphides replace and fill fractures in the host rocks. Chert is by far the most important host rock. A little ore is derived from the zone of transition from wallrock schist to chert, and from the schists that surround, or are included in, the main chert zone. Orebodies in the chert consist of massive sulphide bodies, disseminated sulphide bodies, and concentrations of narrow sulphide stringers. Most of the chert contains some disseminated mineralization and, therefore, orebody boundaries within the chert are determined by assay. The orebodies, in common with their host rock, strike east, dip north at 80-90 degrees , and plunge east at about 50 degrees. They are lenticular in shape, and are distributed, apparently at random, throughout the main chert zone. As may be noted from inspection of the accompanying typical plan and section the orebodies vary greatly in size. Within orebodies, the ratio of chalcopyrite to pyrite varies widely and erratically over distances of a few feet. Parts of some orebodies exhibit pronounced enrichment in chalcopyrite near, and at, contacts between chert and chlorite or sericite-quartz-carbonate schist. Sulphides in the schists included in, or surrounding, the main chert zone are found principally as narrow stringers along schistosity surfaces. The orebodies are cut by three types of coarse-grained veins, all of which attain maximum observed thicknesses of a few inches and lengths of a few feet. The most common type of vein consists of quartz, carbonate, pyrite, and chalcopyrite. Carbonate veinlets constitute the second commonest type. Relatively rare are veins consisting of quartz, carbonate, barite, purple fluorite, dark brown sphalerite, and chalcopyrite (Giblin, 1964). DDH C-11-82 assayed up to 943 ppm V and 1.31% Ti from a gabbro containing disseminated pyrite and magnetite from 155.25-165.25 m (Assessment report 20000013648). Goldshore Resources' DDH CND-22-006 returned 0.35% Cu, 0.06% Co, 0.3 ppm Au, and 3.1 ppm Ag over 41.2 m from 8.2 m depth, including 0.57% Cu, 0.09% Co, 0.39 ppm Au, and 4.4 ppm Ag over 9.4 m from 23.1 m depth. Drilling also identified a gold only intercept of 2.1 m @ 1.88 g/t Au from 98.9 m in the footwall to the North Coldstream VMS deposit, which is related to the East Coldstream style of mineralization 1.6 kilometers to the east (Goldshore Resources press release Oct 4, 2022).
| Rank | Classification |
|---|---|
| 2 | Lode (Gold) |
| 1 | VMS Base Metal |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1967 | 27280000 |
Silver 440000 Ounces Gold 22000 Ounces Copper 102000000 Pounds |
Osmani IA, 1997, OGS R296, Greenwater Lake Area, West-Central Shebandowan Greenstone Belt, p66. Shklanka R, 1969, Copper, Nickel, Lead and Zinc Deposits of Ontario, p315. CMH, 1968-69, p251. | 1906-1967: ~2.7 million tons for 102 million lbs Cu, 440,000 oz Ag, 22,000 oz Au. |
Atlas - 52B13SE North Coldstream
Publication Number: 52B13SE Date: 1996
Author: RGP Thunder Bay
Publisher Name: RGP
Location:
Map - Precambrian Geology, Burchell-Greenwater Lakes Area, West Half
Publication Number: M2622 Scale: 1:20,000 Date: 1997
Author: Osmani I.A.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Burchell Lake area, District of Thunder Bay
Publication Number: R019 Page: 27-35 Date: 1997
Author: Giblin P.E.
Publisher Name: Ontario Dept. of Mines
Location:
Thesis - Geology and Mineralogy of Coldstream Copper Mines
Publication Number: M.Sc Date: 1957
Author: Talyor, H.W.
Publisher Name: University of Minnesota
Location: RGP Thunder Bay
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Page: 314-315 Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Thesis - Report on the Coldstream Property of Shield Development Company Limited
Publication Number: B.Sc Date: 1958
Author: Carson, D.J.
Publisher Name: Queen's University
Location: RGP Thunder Bay
Publication - Technical Report and Resource Estimate on the Osmani Gold Deposit, Coldstream Property, Northwestern Ontario
Publication Number: 43-101 Date: 2011
Author: McCracken, T
Publisher Name: Foundation Resources Inc.
Location: Appendix VIII within AFRO 2.53734
Thesis - Report on North Coldstream Mines Limited
Publication Number: M.Sc Date: 1963
Author: Scott, S.D.
Publisher Name: University of Western Ontario
Location:
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