Ontario Geological Survey
Permanent Link to this Record:
MDI52A05NW00011
| Record Name(s) | Art Douglas Showing - 1987, Calvert and Wallace - 1990, Busby Lake - 1990 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1992-Mar-19 |
| Date Last Modified | 2023-Aug-03 |
| Created By | |
| Revised By |
Primary Commodities: Zinc, Copper, Molybdenum, Gold
Secondary Commodities: Silver
Township or Area: Aldina
Latitude: 48° 23' 51.54" Longitude: -89° 55' 56.81"
UTM Zone: 16 Easting: 282950 Northing: 5364654 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A05NW
Point Location Description: Map in AFRI 52A05NW0019
Location Method: Based on Assessment
1987: discovered by A. Douglas and F. Labreque and conducted prospecting and trenching. 1990: D. Calvert and A. Wallace conducted prospecting, blasting, and sampling, as well as a ground magnetic survey. 1992: D. Calvert conducted linecutting, an EM survey, prospecting, and sampling. 1996: Cumberland Resources optioned the property and conducted prospecting, sampling, a soil geochemical survey and magnetic and EM geophysical surveys. 1997: Cumberland Resources drilled 6 DDH totalling 1079.6 m. 2004: D. Calvert conducted trenching.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.14040 | 52A05NW0019 | 52A05NW0019 |
| 2.16928 | 52A05NW0014 | 52A05NW0014 |
| 2.16929 | 52A05NW0013 | 52A05NW0013 |
| 2.17393 | 52A05NW0023 | 52A05NW0023 |
| 2.28519 | 52A05NW2029 | 52A05NW2029 |
| 2.14932 | 52A05NW8232 | 52A05NW8232 |
| 2.17582 | 52A05NW0025 | 52A05NW0025 |
| 2.17586 | 52A05NW0026 | 52A05NW0026 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Shebandowan
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Amphibolite | 1 | Host |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | |||
| Ironstone-unsubdivided | 3 |
Mar 23, 2018 (Therese Pettigrew) - The Art Douglas Occurrence is hosted by fine-grained, dark green, massive to moderately foliated amphibolite (hornblende hornfels). Two types of amphibolite are present: 1) Fine-grained, massive to weakly foliated amphibolite comprised of hornblende, plagioclase, sericite, and chlorite. 2) Banded amphibolite consisting of thin (less than 1 cm alternating bands of dark green, fine-grained hornblende and buff-coloured, very fine-grained feldspar-sericite-chlorite-hornblende. The mafic and felsic bands are highly deformed, in many cases folded and stretched into rods, boudins, and detached folds. Quartz, feldspar, and epidote veinlets cut the banded amphibolite (Lavigne et al., 1988).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Molybdenite | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| 4 | Sphalerite | Economic | Ore | ||||
| 5 | Powellite | Economic | Ore | ||||
| 6 | Scheelite | Economic | Ore | ||||
| 1 | Hornblende | Economic | Gangue | ||||
| 2 | Sericite | Economic | Gangue | ||||
| 3 | Chlorite | Economic | Gangue | ||||
| 4 | Feldspar | Economic | Gangue |
Mar 23, 2018 (Therese Pettigrew) - Mineralization, consisting of up to 5 percent chalcopyrite, molybdenite, and pyrite, is generally associated with the banded amphibolite. Fine-grained chalcopyrite, molybdenite, and pyrite are disseminated throughout the rock, but generally appear to be spatially associated with the felsic bands. Thin molybdenite bands are also found at the contacts between the veinlets and the amphibolite. Powellite (CaMoO4) and scheelite are also present. The extent of the mineralization is open in all directions as the exposure consists of a 3 m by 6 m outcrop which is mineralized in its entirety. This occurrence has some characteristics of "porphyry-type" mineralization. An associated intrusion has yet to be identified. Samples collected by OGS staff returned assays of 0.02 to 1.56% Cu (average 0.65%), 11 to 3173 ppm Mo (average 1860 ppm), 8 to 2350 ppb Au (average 497 ppb), and trace to 21 ppm Ag (average 6.75 ppm) (Lavigne et al., 1988). The main mineralized zone is located at the NE outflow of Busby Lake and is associated with the amphibolite schist (AFRI 52A05NW0019). In 1996, Cumberland Resources located a boulder approximately 225 m to the east, at about NAD83, UTM Zone 16, 283198 m E, 5364585 m N, that assayed 0.28-0.5% Cu, 12.75-26% Zn, 1.06% Pb, 4.1-40.25 opt Ag, and 0.16 opt Au (AFRI 52A05NW0014). Cumberland Resources’ DDH ALD97-2 assayed up to 445 ppm Zn and 104 ppm Cu. DDH ALD97-4 assayed up to 0.03% Cu and 0.24% Zn over 1.93 m from 136.75-138.18 m in an argillite/graphite horizon (AFRI 52A05NW0025).
Article - Thunder Bay Resident Geologist's District - 1988
Publication Number: MP142.005 Page: 101 Date: 1997
Author: Lavigne Jr. M.J., Sarvas P., White G.D., Scott J.F.
Publisher Name: Ontario Geological Survey
Location:
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