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Ontario Geological Survey
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MDI42E10NW00008
| Record Name(s) | MacLeod-Cockshutt Mine - 1933, MacLeod-Mosher - 1967, Hardrock Project - 2011, F-Zone - 1936 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Past Producing Mine With Reserves or Resources |
| Date Created | 1980-Feb-12 |
| Date Last Modified | 2023-May-12 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Zinc, Lead, Silver
Township or Area: Ashmore
Latitude: 49° 40' 46.24" Longitude: -86° 56' 30.51"
UTM Zone: 16 Easting: 504198 Northing: 5503000 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42E10NW
Point Location Description: Main headframe
Location Method: Data Compilation
Access Description: The mine is located in southwestern Ashmore Township and southeastern Errington Township. The property is accessible by Highway 584, south from Geraldton for approximately 5.0 km. The mine is located immediately east of the road.
1931: Claims were staked by A. Cockshutt and F. MacLeod. Gold-bearing quartz veins were discovered. 1932: Surface exploration performed. 1933: Surface expl'n con't and the discovery of larger mineralized zones led to the organization of MacLeod-Cockshutt Gold Mines Ltd. 1934: A 3 compartment shaft (No. 1 Shaft) was sunk to 52.4 m. Operations suspended due to discouraging results. 1936: Diamond-drilling resumed; 4 compartment shaft sunk (No. 2 Shaft) 600 m to the SE of No. 1 Shaft; levels established; buildings cons't at the site of the No. 2 shaft. 1937: Cons't began on a 500 t/d mill. 1938-1941: the MacLeod-Cockshutt Mine became the fifth producing gold mine in the Little Long Lac area in April 1938. Extensive underground dev't con't. Work began to expand mill to 1000 t/d. 1942-1949: Extensive underground dev't and diamond-drilling con't. 1950: An additional mill was constructed, increasing capabilities to 1400 t/d. 3077 tons of tailings treated. 1951: F-zone exhausted; roaster plant shut down; more tailings treated. 1952: Rod mill added. 1953: Milling rate increased to an avg of 1250 to/d. 1954-1960: Underground dev't con't. 1959: Mill tonnage increased to 1915 tons/day; a drive was extended west from the 524.26 m level to meet Mosher's 530.4 m level. 1961: Production from Consolidated Mosher began with 1250 tons/d. 1962: Consolidated Mosher began providing most of the ore. 1964: Mill operating at capacity (2500 tons/d). 1965-66: Underground operations con't. 1967: Mine began operations on a salvage basis. MacLeod-Cockshutt Gold Mines Ltd., Consolidated Mosher Mines Ltd. and Hard Rock Gold Mines Ltd. were amalgamated to form MacLeod Mosher Gold Mines Ltd. 1968-70: Underground operations ceased in July 1970. 1980s: Lac Minerals Ltd undertook studies on the existing underground reserves and carried out lithogeochamical sampling. 1987: Lac Minerals conducted ground geophysical surveys, drilled 77 DDH totalling approx. 15,240 m. 1992: Asarco Exploration Company of Canada Ltd. entered a 5-year agreement with Lac Minerals. 1993: Asarco carried out a program of RC overburden drilling and DDH focusing on the F Zone and the albite porphyry. A pit resource of 1,920,000 tons grading 0.079 oz/t Au and ramp resource of 1,160,000 tons grading 0.127 oz/t Au was calculated for the Porphyry Hill, West and East pits. 1994: Asarco continued exploration with RC drilling in overburden, sonic holes in tailings and an additional 40,000’ of DDH. 1996: Cyprus Canada Inc assumed Asarco’s role in the Lac Minerals agreement and drilled 24 holes, leading to the discovery of the B Zone. 1997: agreement ended, properties were dormant until 2000, when a rehabilitation program was begun. 2000-2007: crown pillar drilling was conducted for stability assessment. 2008: Premier Gold acquired Lac Minerals properties. 2009: Premier drilled 346 DDH, totalling 91,802 m. 2 areas were stripped, washed and sampled. 2010: three areas were stripped and washed, two were sampled. A regional prospecting program was conducted during the summer. 279 DDH totalling 114,611 m drilled. 2011: drilling continued with 204 DDH totalling 107, 413 m. Premier Gold acquired Goldstone Resources, which gave Premier 100% interest in the Hardrock Project. 2012: Premier drilled 125 DDH totalling 68,549 m. 2013: Premier drilled 296 DDH totalling 138,250.5 m. 2014-15: Premier carried out trenching and drilled 122 DDH totalling 40,975.9 m. 2016: Greenstone Gold Mines GP Inc. conducted IP and mag surveys. 2018: Greenstone Gold drilled 405 RC holes totalling 19,995 m and 62 percussion holes totalling 535 m. 2019: Greenstone Gold drilled 77 RC holes totalling 5999 m and 58 DDH totalling 18,141.85 m.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| OM94-005 | 42E10NW2008 | 42E10NW2008 |
| 63.3861 | 42E10NW0142 | 42E10NW0142 |
| 2.55107 | 20000014777 | 20000014777 |
| 2.54370 | 20000013488 | 20000013488 |
| 2.56635 | 20000014179 | 20000014179 |
| 2.55252 | 20000009271 | 20000009271 |
| 2.57225 | 20000014180 | 20000014180 |
| 2.56745 | 20000014178 | 20000014178 |
| 2.57054 | 20000013872 | 20000013872 |
| 55357 | 20000018610 | 20000018610 |
| 65972 | 20000019282 | 20000019282 |
Province: Superior
Subprovince: Wabigoon
Belt: Beardmore-Geraldton
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The orebodies ar the MacLeod Cockshutt Mine occur within the western part of a large elliptical bulge along the south flank of the Ellis syncline. Within this bulge the rock formations have been intensely folded along east-west axes and plunge westerly at 20-25 degrees. In addition to the strongly sheared zone (Bankfield-Tombill fault zone) extending across the southern part of the property, there are many minor traverse faults of general north-south strike and steep easterly dip. Three distinct orebody types have been recognized: 1). Quartz veins and mineralized zones occur within and along the contacts of the albite porphyry and within greywacke and lean iron formation. The sulphides show a tendency to concentrate in the wall rocks. Gold occurs in both altered wall rocks and veins and is closely associated with sulphides. 2). Irregular, massive lenses of sulphides and quartz occur in a folded series of greywacke and iron formation. Veins are usually barren of gold mineralization except where they contain sulphides. 3). Numerous thin, gold-bearing quartz stringers occur along shear fractures in zones of faulting, folding and shearing at the contact with wacke and albite porphyry. Gold concentrations were relatively lower than in the first two types, and this ore is free milling. The F Zone was the most spectacular, accounting for an orebody of some 10,000,000 tons of 0.15 oz/ton Au. Macdonald (1982) noted 3 types of gold mineralization: 1). Relatively undeformed qtz-carb-sulph veins striking approximately WNW, often localized by shear faults. 2). Deformed qtz-carb-sulph veins, striking obliquely (ENE) to the major structures. 3). Qtz-carb-sulph replacement ore, often iron formation, spatially associated with type '1' veins.
Aug 11, 2014 (Therese Pettigrew) - The local geological setting of the Hardrock deposit is represented by the southern sedimentary unit of the Beardmore-Geraldton Belt. The southern sedimentary unit in the Geraldton area is characterized by multiple horizons of magnetite-rich chert banded iron formation within a thick sequence of interlayered sandstone-argillite and minor polymictic conglomerate. The sequence is intruded by medium- to coarse-grained diorite sills and feldspar-quartz porphyry dykes, which, together with the sedimentary rocks are folded by tight to isoclinal, regional F2 folds. Most mineralized occurrences in the Hardrock deposit area lie in a zone of deformation to the immediate north of, and genetically linked to, the Tombill-Bankfield Deformation Zone. Gold deposits in the Hardrock deposit area are examples of epigenetic non-stratiform banded iron-formation-hosted gold deposits (Brousseau et al., 2013).
Dec 07, 2005 (Q Unknown) - The property is underlain by a wide variety of rock formations. The oldest are of volcanic origin and form a narrow zone of tuffs and agglomerate, which, with intrusive hornblende diorite. form a low ridge across the southern part of the claim group. To the north, in which direction grain gradations indicate the tops face, narrow conformable bands of hydroclastic material appear and, as these increase in both number and thickness relative to the tuffaceous horizons, the zone passes over into an overlying sedimentary series made up of conglomerate, greywacke, iron formation and slate.
| Rock Type | Rank | Composition | Texture | Relationship | Porphyry-unsubdivided | 1 | Albite | Shears | Host |
|---|---|---|---|---|
| Sandstone | 2 | Greywacke | Shears | Host |
| Ironstone-unsubdivided | 3 | Host | ||
| Vein | 4 | Quartz | Host | |
| Quartz Diorite | 5 | Quartz-Diorite | Host |
Dec 07, 2005 (B Nelson) - The MacLeod-Cockshutt property is underlain by a wide variety of rock formations. The oldest are of volcanic origin and form a narrow zone of tuffs and agglomerates, which with intrusive hornblende diorite, form a low ridge across the southern part of the claim group. To the north, in which direction grain gradations indicate the tops face, narrow conformable bands of hydroclastic material appear and, as these increase in both number and thickness relative to the tuffaceous horizons, the zone passes over into an overlying sedimentary series made up of conglomerate, greywacke, iron formation, and slate. Intrusive into this series is a variety of igneous rocks, which from the oldest to the youngest include hornblende gabbro and diorite and both quartz and olivine diabase.
| 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 | Galena | Economic | Ore | ||||
| 4 | Gold | Economic | Ore | ||||
| 5 | Pyrite | Economic | Ore | ||||
| 6 | Sphalerite | Economic | Ore | ||||
| 7 | Telluride | Economic | Ore | ||||
| 8 | Pyrrhotite | Economic | Ore | ||||
| 9 | Leucopyrite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Carbonate | Economic | Gangue | ||||
| Quartz | Alteration | Silicification | 1 | Unknown | Disseminated | ||
| Sericite | Alteration | Sericitization | 2 | Unknown | Disseminated | ||
| Carbonate | Alteration | Carbonatization | 3 | Unknown | Disseminated |
Dec 07, 2005 (B Nelson) - Sulphides, in order of abundance, include py (80%), asp (15%), po, sp, cp, leucopyrite, gn, gold and cn. Non-metallic minerals recognized include ankerite, calcite, scheelite, tourmaline and graphite. Iron oxides occur in many places. Six main ore zones were exploited. Most of the ore was recovered from the 'F' zone, which is 6.1 to 18.3 wide, 121.9 to 213.4 m high and continuous along plunge for 2,529.84 m, about 1,371.6 m of which is located on the property of the Consolidated Mosher Mine to the west.
Aug 11, 2014 (Therese Pettigrew) - Gold mineralization generally occurs in association with subvertical structures associated with quartz veins or stringers, minor to semi-massive sulphides (associated with replacement zones in BIF), weak to moderate carbonate and weak to strong sericite alteration. The or zones rake shallowly towards the west in the vicinity of the Hard Rock, MacLeod-Cockshutt and Mosher Mines (15-30° W) and slightly more steeply towards the west at the Little Long Lac Mine (50-60° W), indicative of a strong structural control that post-dates the tight folding of the primary units. There is also local control as a result of lithological controls, with gold-bearing zones preferentially forming where subvertical structures have crossed favourable environments, including the BIF and areas around the contact of the Hard Rock Porphyry and the sedimentary rocks it intrudes. The structurally controlled, high grade veins spatially related to the Hard Rock Porphyry are similar to quartz-carbonate-sericite veins that host gold in many gold camps in Ontario. The veins related to the Hard Rock Porphyry do not host significant tonnages of ore from past production, despite their locally high grades. The turbidite-associated mineralization is typically characterized by narrow, often sheeted, mm-cm scale veins with attendant by highly variable degrees of carbonate-sericite-pyrite alteration. This style of mineralization forms wide, low grade zones. The iron-formation hosted mineralization is similar to that in Archean-age gold mines elsewhere in Ontario (Musselwhite and Dona Lake Mines). This mineralization is typically in the form of sulphidized zones on a cm-m scale associated with minor quartz veins that transect iron-formation beds (Armstrong et al., 2010).
Dec 07, 2005 (B Nelson) - Some of the quartz stringers are not accompanied by any visible alteration of the wall rocks, but most of them, and in particular those that are gold-bearing, are bordered by buff-colored selvages of sericitized and carbonatized greywacke. The selvages may extend for as much as eight inches outward from the wall of a stringer not more than a quarter of an inch in thickness, and where several stringers occur along closely spaced, parallel fractures, altered zones several feet in width are common.
| Rank | Classification |
|---|---|
| 1 | Mesothermal |
| 1 | Vein |
Date: Jan 09, 1997
Geologist: B Nelson
Notes: The Beardmore-Geraldton Economic Geologist visited the minesite in August of 1982, June 13, 1985, and August 28-29, 1985.
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Hardrock Open Pit | 2021 | Inferred Mineral Resource | 356000 | 2021 NI 43-101 | 13,100 oz Au contained | Gold 1.14 g/t |
| Hardrock Open Pit | 2021 | Proven Mineral Reserve | 5623000 | 2021 NI 43-101 | 232,000 oz Au contained | Gold 1.28 g/t |
| Hardrock Open Pit | 2021 | Probable Mineral Reserve | 129700000 | 2021 NI 43-101 | 5,307,000 oz Au contained | Gold 1.27 g/t |
| Hardrock Underground | 2021 | Indicated Mineral Resource | 9792000 | 2021 NI 43-101 | 1,237,000 oz Au contained | Gold 3.93 g/t |
| Hardrock Underground | 2021 | Inferred Mineral Resource | 24930000 | 2021 NI 43-101 | 3,059,000 oz Au contained | Gold 3.87 g/t |
| Hardrock Open Pit | 2021 | Indicated Mineral Resource | 5972000 | 2021 NI 43-101 | 231,400 oz Au contained | Gold 1.21 g/t |
| Hardrock Open Pit | 2014 | Indicated Mineral Resource | 64663000 | Premier Gold PEA 2014 | 2.454 Moz Au, cut-off grade of 0.35 g/t Au | Gold 1.18 g/t |
| Hardrock Open Pit | 2014 | Inferred Mineral Resource | 24669000 | Premier Gold PEA 2014 | 0.938 Moz Au, cut-off grade of 0.35 g/t Au | Gold 1.18 g/t |
| Overall Hardrock deposit | 2013 | Indicated Mineral Resource | 55750300 | Brousseau et al, 2013 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 3,240,968 oz Au | Gold 1.81 g/t |
| Overall Hardrock deposit | 2013 | Inferred Mineral Resource | 34711200 | Brousseau et al, 2013 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 3784047 oz Au | Gold 3.39 g/t |
| Underground Hardrock deposit | 2013 | Inferred Mineral Resource | 16918700 | Brousseau et al, 2013 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, >3.00 g/t Au cutoff, 2,925,065 oz Au | Gold 5.38 g/t |
| Underground Hardrock deposit | 2013 | Indicated Mineral Resource | 5522200 | Brousseau et al, 2013 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, >3.00 g/t Au cutoff, 889,022 oz Au | Gold 5.01 g/t |
| In-Pit Hardrock deposit | 2013 | Indicated Mineral Resource | 50228100 | Brousseau et al, 2013 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, >0.50 g/t Au cutoff, 2,351,947 oz Au | Gold 1.46 g/t |
| In-Pit Hardrock deposit | 2013 | Inferred Mineral Resource | 17792500 | Brousseau et al, 2013 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, >0.50 g/t Au cutoff, 858,982 oz Au | Gold 1.50 g/t |
| Hardrock Underground | 2012 | Inferred Mineral Resource | 16009000 | Lewis et al., 2013 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 5.91 g/t Au cutoff grade , 3,040,000 oz Au | Gold 5.91 g/t |
| Hardrock In-Pit | 2012 | Measured Mineral Resource | 12737000 | Lewis et al., 2013 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 0.5 g/t Au cutoff grade, 576,000 oz Au | Gold 1.41 g/t |
| Hardrock In-Pit | 2012 | Indicated Mineral Resource | 33920000 | Lewis et al., 2013 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 0.5 g/t Au cutoff grade, 1,685,000 oz Au | Gold 1.55 g/t |
| Hardrock Underground | 2012 | Indicated Mineral Resource | 4730000 | Lewis et al., 2013 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 2.8 g/t Au cutoff grade, 829,000 oz Au | Gold 5.45 g/t |
| Hardrock Underground | 2012 | Measured Mineral Resource | 315000 | Lewis et al., 2013 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 2.8 g/t Au cutoff grade, 60,000 oz Au | Gold 5.93 g/t |
| Hardrock In-Pit | 2012 | Inferred Mineral Resource | 6633000 | Lewis et al., 2013 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 0.5 g/t Au cutoff grade , 371,000 oz Au | Gold 1.74 g/t |
| Hardrock Project Underground & Open Pit | 2011 | Measured Mineral Resource | 9177000 | Murahwi et al., 2011 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 985,800 oz Au | Gold 3.340 g/t |
| Hardrock Project Underground & Open Pit | 2011 | Indicated Mineral Resource | 1506000 | Murahwi et al., 2011 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 1,506,000 oz Au | Gold 4.042 g/t |
| Hardrock Project Underground & Open Pit | 2011 | Inferred Mineral Resource | 1122700 | Murahwi et al., 2011 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 6,802,000 oz Au | Gold 5.133 g/t |
| Hardrock Project Underground | 2011 | Measured Mineral Resource | 2312000 | Murahwi et al., 2011 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 2.80 g/t Au cutoff grade, 445,800 oz Au | Gold 5.993 g/t |
| Hardrock Project Underground | 2011 | Inferred Mineral Resource | 6187000 | Murahwi et al., 2011 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 2.80 g/t Au cutoff grade , 1,073,500 oz Au | Gold 5.397 g/t |
| Hardrock Project Open Pit | 2011 | Measured Mineral Resource | 6865000 | Murahwi et al., 2011 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 0.83 g/t Au cutoff grade, 540,000 oz Au | Gold 2.446 g/t |
| Hardrock Project Open Pit | 2011 | Indicated Mineral Resource | 5833000 | Murahwi et al., 2011 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 0.83 g/t Au cutoff grade, 427,500 oz Au | Gold 2.28 g/t |
| Hardrock Project Open Pit | 2011 | Inferred Mineral Resource | 12698000 | Murahwi et al., 2011 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 0.83 g/t Au cutoff grade , 615,000 oz Au | Gold 2.370 g/t |
| Hardrock Project Underground | 2011 | Indicated Mineral Resource | 5757000 | Murahwi et al., 2011 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 2.80 g/t Au cutoff grade, 1,078,000 oz Au | Gold 5.827 g/t |
| Hard Rock Area Open Pit | 2010 | Indicated Mineral Resource | 11600000 | Armstrong et al., 2010 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 0.053 oz/t Au cutoff grade, 675000 oz Au | Gold 1.82 g/t |
| Hard Rock Area Open Pit | 2010 | Inferred Mineral Resource | 7300000 | Armstrong et al., 2010 | Includes the area over the Hard Rock, MacLeod-Cockshutt and Consolidated Mosher mines, 0.053 oz/t Au cutoff grade , 425000 oz Au | Gold 1.81 g/t |
| MacLeod-Cockshutt Mine | 1969 | Probable | 789358 | OFR 5630 | Including material from the Consolidated Mosher Mine. | Gold .1 g/t |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1970 | 208236 |
Silver 2463 Ounces Gold 27208 Ounces |
OFR 5630 | 27,208 oz Au, 2,463 oz Ag (combined MacLeod-Cockshutt and Mosher Longlac mines) |
| 1969 | 449049 |
Silver 4378 Ounces Gold 44292 Ounces |
OFR 5630 | 44,292 oz Au, 4,378 oz Ag (combined MacLeod-Cockshutt and Mosher Longlac mines) |
| 1968 | 421635 |
Silver 5025 Ounces Gold 52050 Ounces |
OFR 5630 | 52,050 oz Au, 5,025 oz Ag (combined MacLeod-Cockshutt and Mosher Longlac mines) |
| 1967 | 425991 |
Silver 5455 Ounces Gold 57034 Ounces |
OFR 5630 | 57,034 zo Au, 5,455 oz Ag (combined MacLeod-Cockshutt and Mosher Longlac mines) |
| 1966 | 985010 |
Silver 1012 Ounces Gold 9546 Ounces |
OFR 5630 | 9,546 oz Au, 1,012 oz Ag |
| 1965 | 108859 |
Silver 1470 Ounces Gold 13473 Ounces |
OFR 5630 | 13,473 oz Au, 1,470 oz Ag |
| 1964 | 83145 |
Silver 1043 Ounces Gold 9397 Ounces |
OFR 5630 | 9,397 oz Au, 1,043 oz Ag |
| 1963 | 106656 |
Silver 1399 Ounces Gold 13773 Ounces |
OFR 5630 | 13,773 oz Au, 1,399 oz Ag |
| 1962 | 214808 |
Silver 2108 Ounces Gold 21560 Ounces |
OFR 5630 | 21,560 oz Au, 2,108 oz Ag |
| 1961 | 631637 |
Silver 6939 Ounces Gold 72005 Ounces |
OFR 5630 | 72,005 oz Au, 6,939 oz Ag |
| 1960 | 625769 |
Silver 6574 Ounces Gold 68462 Ounces |
OFR 5630 | 68,462 oz Au, 6,574 oz Ag |
| 1959 | 629148 |
Silver 6383 Ounces Gold 66616 Ounces |
OFR 5630 | 66,616 oz Au, 6,383 oz Ag |
| 1958 | 597459 |
Silver 6946 Ounces Gold 65553 Ounces |
OFR 5630 | 65,553 oz Au, 6,946 oz Ag |
| 1957 | 568450 |
Silver 6810 Ounces Gold 66549 Ounces |
OFR 5630 | 66,549 oz Au, 6,810 oz Ag |
| 1956 | 557938 |
Silver 6598 Ounces Gold 65614 Ounces |
OFR 5630 | 65,614 oz Au, 6,598 oz Ag |
| 1955 | 545199 |
Silver 6846 Ounces Gold 67467 Ounces |
OFR 5630 | 67,467 oz Au, 6,846 oz Ag |
| 1954 | 502177 |
Silver 6624 Ounces Gold 61397 Ounces |
OFR 5630 | 61,397 oz Au, 6,624 oz Ag |
| 1953 | 411735 |
Silver 6279 Ounces Gold 57618 Ounces |
OFR 5630 | 57,618 oz Au, 6,279 oz Ag |
| 1952 | 411777 |
Silver 6171 Ounces Gold 65049 Ounces |
OFR 5630 | 65,049 oz Au, 6,171 oz Ag |
| 1951 | 332619 |
Silver 4353 Ounces Gold 69939 Ounces |
OFR 5630 | 69,939 oz Au, 4,353 oz Ag |
| 1950 | 236935 |
Silver 1266 Ounces Gold 55006 Ounces |
OFR 5630 | 55,006 oz Au, 1,266 oz Ag |
| 1949 | 164059 |
Silver 644 Ounces Gold 43134 Ounces |
OFR 5630 | 43,134 oz Au, 644 oz Ag |
| 1948 | 159910 |
Silver 637 Ounces Gold 40318 Ounces |
OFR 5630 | 40,318 oz Au, 637 oz Ag |
| 1947 | 188076 |
Silver 868 Ounces Gold 43327 Ounces |
OFR 5630 | 43,327 oz Au, 868 oz Ag |
| 1946 | 143769 |
Silver 723 Ounces Gold 32870 Ounces |
OFR 5630 | 32,870 oz Au, 723 oz Ag |
| 1945 | 27223 |
Silver 158 Ounces Gold 9551 Ounces |
OFR 5630 | 9,551 oz Au, 158 oz Ag |
| 1944 | 113397 |
Silver 598 Ounces Gold 39900 Ounces |
OFR 5630 | 39,900 oz Au, 598 oz Ag |
| 1943 | 164937 |
Silver 765 Ounces Gold 54632 Ounces |
OFR 5630 | 54,632 oz Au, 765 oz Ag |
| 1942 | 211466 |
Silver 965 Ounces Gold 68017 Ounces |
OFR 5630 | 68,017 oz Au, 965 oz Ag |
| 1941 | 215132 |
Silver 1085 Ounces Gold 60362 Ounces |
OFR 5630 | 60,362 oz Au, 1,085 oz Ag |
| 1940 | 216678 |
Silver 1616 Ounces Gold 54771 Ounces |
OFR 5630 | 54,771 oz Au, 1,616 oz Ag |
| 1939 | 188833 |
Silver 2382 Ounces Gold 45170 Ounces |
OFR 5630 | 45,170 oz Au, 2,382 oz Ag |
| 1938 | 114601 |
Silver 1602 Ounces Gold 25518 Ounces |
OFR 5630 | 25,518 oz Au, 1,602 oz Ag |
Journal - Gold Ores of the Little Long Lac Area, Ontario; ECONGEO 1943, VOL38 #3, p. 204-252
Publication Number: N/A Date: 1943
Author: Armstrong, H.S.
Publisher Name: Economic Geology
Location:
Map - LITTLE LONGLAC GOLD AREA, District of Thunder Bay, Ontario
Publication Number: ARM44D Scale: 1:31,680 Date: 1935
Author: Bruce, E.L.
Publisher Name: Ontario Dept. of Mines
Location:
Thesis - Geology of Bankfield Vicinity, Little Long Lac Area, Ontario
Publication Number: PhD Thesis Date: 1943
Author: Hoiles, R.G.
Publisher Name: University of Arizona
Location: Thunder Bay RGP
Map - Compilation series, Geraldton sheet, Thunder Bay and Cochrane districts
Publication Number: P0241 Scale: 1:126,720 Date: 1984
Author: Stott G.M., McConnell C.D., Mason J.K.
Publisher Name: Ontario Geological Survey
Location:
Map - MacLeod Mosher Gold Mines Limited, surface geology, parts of Errington and Ashmore townships, District of Thunder Bay
Publication Number: P0435 Scale: 1:6,000 Date: 1997
Author: Ferguson S.A.
Publisher Name: Ontario Dept. of Mines
Location:
Compend - Summary of field work, 1983
Publication Number: MP116 Page: 194-197 Date: 1983
Author: Wood J., White O.L., Barlow R.B., Colvine A.C.
Publisher Name: Ontario Geological Survey
Location:
Map - MacLeod Mosher Gold Mines Limited, subsurface plans and longitudinal projection, parts of Errington and Ashmore townships, District of Thunder Bay
Publication Number: P0436 Scale: 1:6,000 Date: 1997
Author: Ferguson S.A.
Publisher Name: Ontario Dept. of Mines
Location:
Map - MacLeod Mosher Gold Mines Limited, cross-sections, parts of Errington and Ashmore townships, District of Thunder Bay
Publication Number: P0437 Scale: 1:6,000 Date: 1997
Author: Ferguson S.A.
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: 345-363 Date: 1986
Author: Mason J.K., White G.D.
Publisher Name: Ontario Geological Survey
Location:
File - Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
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:
Map - Township of Ashmore, District of Thunder Bay, Ontario
Publication Number: M1951-02 Scale: 1:12,000 Date: 1997
Author: Horwood H.C., Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Thesis - Geology and Ore Deposits of the MacLeod-Cockshutt Gold Mines
Publication Number: MSc Thesis Date: 1940
Author: Morrow, H.F.
Publisher Name: Queen�s University
Location: Thunder Bay RGP
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 - Little Long Lac gold area
Publication Number: ARV44-03 Date: 1997
Author: Bruce E.L.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Thunder Bay data series, Geraldton area, Thunder Bay District
Publication Number: P2520 Scale: 1:15,840 Date: 1982
Author: Love W.D.
Publisher Name: Ontario Geological Survey
Location:
Part - Geology of Ashmore Township
Publication Number: ARV60-05 Page: 75-94 Date: 1997
Author: Horwood H.C., Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Article - The MacLeod-Cockshutt and Hard Rock mines, Geraldton: examples of an iron-formation related gold deposit
Publication Number: MP106.028 Date: 1997
Author: Macdonald A.J.
Publisher Name: Ontario Geological Survey
Location:
Map - Geophysical Series, JELLICOE PROJECT, Ontario, Airborne Magnetic, Total Field
Publication Number: 30002G Date: 1974
Author: Geological Survey of Canada, Ontario Division of Mines
Publisher Name: Ontario Ministry of Northern Development and Mines, Ontario Geological Surv
Location:
Publication - Technical Report and Mineral Resource Estimate for the Hardrock Deposit
Publication Number: Date: 2013
Author: Brousseau, K., Turcotte, B., Richard, P-L., and Pelletier, C.
Publisher Name: Premier Gold Mines / InnovExplo
Location: SEDAR
Publication - Technical Report on the Updated Mineral Resource Estimate for the Hardrock Gold Property; Geraldton, Ontario, Canada
Publication Number: Date: 2011
Author: Murahwi, C., Shoemaker, S., and Gowans, R.
Publisher Name: Premier Gold Mines / Micon
Location: SEDAR
Publication - Technical Report on the Mineral Resource Estimates for the Hardrock, Brookbank and Keylake Projects; Trans-Canada Property, Beardmore-Geraldton Area, Northern Ontario, Canada
Publication Number: Date: 2013
Author: Lewis, W.J., Murahwi, C., and San Martin, I.A.J.
Publisher Name: Premier Gold Mines / Micon
Location: SEDAR
Publication - NI 43-101 Technical Report Concerning: Trans-Canada Property, Hardrock and Brookbank Projects, Preliminary Economic Assessment
Publication Number: Date: 2014
Author: Stantec - Mining
Publisher Name: Premier Gold Mines / Stantec
Location:
Map - Part of Thunder Bay District, traversed by Canadian Northern Railway
Publication Number: ARM26B Scale: 1:126,720 Date: 1998
Author: Burrows A.G.
Publisher Name: Ontario Bureau of Mines
Location:
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