Ontario Geological Survey
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MDI52N04NE00078
| Record Name(s) | McFinley Mines Ltd. D and DA Zones - 1987, Sabina Industries Ltd. - 1987 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect Without Reported Reserves or Resources |
| Date Created | 1997-Feb-02 |
| Date Last Modified | 2022-May-06 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Bateman
Latitude: 51° 7' 26.22" Longitude: -93° 44' 38.23"
UTM Zone: 15 Easting: 447936.677 Northing: 5663872.016 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52N04NE
Point Location Description: N/A
Location Method: Data Compilation
1926: 8 claims were staked by McCallum Red Lake Mines Ltd. c. 1930: Stripping and trenching. 1933: Part of the present property held by Wilson Red Lake Gold Mines Ltd. 1941-42: Diamond drilling. 1943-44: McFinley Red Lake Gold Mines Ltd. acquired various groups of claims from the above companies. After various re-organizations, the company became known as McFinley Mines Ltd. 1944-45: Magnetometer survey, geological mapping, trenching. 1944-46: Diamond drilling totalling 14822.1 m. 1957: Shaft completed to a depth of 129.0 m, with levels at 45.75 m, 84.0 m and 122.0 m. Total of 428.4 m of underground development and 894.2 m of underground diamond drilling. 1974: Sabina Industries Ltd. acquired 60% of McFinley Mines Ltd. 1975: Magnetometer and EM surveys, 25 drill holes totalling 2578.65 m. 1981: Bulk sampling. 1983: Diamond drilling.
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
Dec 07, 2005 (K R Kettles) - GEOLOGICAL DESCRIPTION: The McFinley property is primarily underlain by highly altered mafic metavolcanic flows. These rocks strike at approximately N30deg.E and dip 65deg. to 75deg. northwest. Pillows have been observed in the flows, and stratigraphic tops are to the northwest. The rocks have been moderately to intensely sheared, and the foliation is parallel to sub-parallel to the stratigraphy. Where highly sheared, the mafic metavolcanic rocks have been silicified, carbonatized and are biotitic. Thin bands of iron formation are found intercalated within the volcanics. Locally, the iron formation bands are folded and brecciated, and contain quartz stringers and disseminated to massive sulphide layers. A long narrow unit of talc-schist has been intersected by drilling to the southeast of McFinley Peninsula. This altered ultramafic unit is continuous to the north end of McFinley Island, and is northwest of and parallel to the East Bay Serpentinite. DEPOSIT DESCRIPTION: The D and Da zones are parallel iron formation units, about 30 m apart (Da is above). The zones have ben traced for a strike length of 884.5 m, and are open at both ends. Drill holes have investigated the zones to a depth of 150 m. The zones are described as narrow units of interbedded chert and well layered and laminated sulphide iron formation. Locally, the sulphide layers are greater than 15 cm. in thickness and form accumulations of massive pyrrhotite, pyrite and lesser arsenopyrite, chalcopyrite, galena and sphalerite. GEOPHYSICAL DATA: An EM anomaly, over 1200 m in length, is caused by a steeply dipping iron formation unit.
| Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 | Iron Formation | Banded | Host |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Altered | Adjacent | |
| Serpentinite | 3 | Serpentinite | Near |
Dec 07, 2005 (K R Kettles) - The McFinley property is primarily underlain by highly altered mafic metavolcanic flows. These rocks strike at approximately N30deg.E and dip 65deg. to 75deg. northwest. Pillows have been observed in the flows, and stratigraphic tops are to the northwest. The rocks have been moderately to intensely sheared, and the foliation is parallel to sub-parallel to the stratigraphy. Where highly sheared, the mafic metavolcanic rocks have been silicified, carbonatized and are biotitic. Thin bands of iron formation are found intercalated within the volcanics. Locally, the iron formation bands are folded and brecciated, and contain quartz stringers and disseminated to massive sulphide layers. A long narrow unit of talc-schist has been intersected by drilling to the southeast of McFinley Peninsula. This altered ultramafic unit is continuous to the north end of McFinley Island, and is northwest of and parallel to the East Bay Serpentinite. The D and Da zones are parallel iron formation units, about 30 m apart (Da is above). The zones have ben traced for a strike length of 884.5 m, and are open at both ends. Drill holes have investigated the zones to a depth of 150 m. The zones are described as narrow units of interbedded chert and well layered and laminated sulphide iron formation. Locally, the sulphide layers are greater than 15 cm. in thickness and form accumulations of massive pyrrhotite, pyrite and lesser arsenopyrite, chalcopyrite, galena and sphalerite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 2 | Silver | Economic | Ore | ||||
| 3 | Pyrrhotite | Economic | Ore | ||||
| 4 | Pyrite | Economic | Ore | ||||
| 5 | Magnetite | Economic | Ore | ||||
| 6 | Sphalerite | Economic | Ore | ||||
| 7 | Galena | Economic | Ore | ||||
| 8 | Chalcopyrite | Economic | Ore | ||||
| 9 | Arsenopyrite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Chert | Economic | Gangue | ||||
| Quartz | Alteration | Silicification | 1 | Strong | |||
| Carbonate | Alteration | Carbonatization | 2 | Strong | |||
| Biotite | Alteration | Biotitic | 3 |
Dec 07, 2005 (K R Kettles) - The D zone is reported to contain 407,256 tons grading at an average of 0.33 oz/ton(11.314 g/tonne)Au and 1.12 oz/ton (38.399 g/tonne)Ag. The Da zone is reported to contain 19,118 tons grading at an average of 2.75 oz/ton (94.283 g/tonne)Au and 0.49 oz/ton (16.800 g/tonne)Ag. These values are undiluted and calculated over an average width of 2.56 m (Northern Miner, October 13, 1983, pages 1,2).
Dec 07, 2005 (K R Kettles) - The mafic metavolcanic rocks have been silicified, carbonatized and are biotitic.
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| D Zone | 2002 | Inferred Mineral Resource | 96400 | OFR 6180, Table 14 (Hogg 2002) | Grade: 5.14 g/t Au (106 250 tons of 0.15 opt Au) to a depth of 120 m (400 feet). Note this resource is included in the total resource contained in MDI52N04SE00005 (McFinley Mine). |
File - Resident Geologist's Files, Red Lake
Publication Number: RGF 1974 Date: 1974
Author: Bacon, W.R.
Publisher Name:
Location: Red Lake RGP
File - Resident Geologist's Files, Red Lake
Publication Number: RGF 1980 Date: 1980
Author: Seeber, O.A.
Publisher Name:
Location: Red Lake RGP
Mono - Gold occurrences, prospects, and deposits of the Red Lake area, volumes 1 and 2
Publication Number: OFR5558 Date: 1987
Author: Durocher M.E., Burchell P.S., Andrews A.J.
Publisher Name: Ontario Geological Survey
Location:
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