Ontario Geological Survey
Permanent Link to this Record:
MDI000000001089
| Record Name(s) | Chapman Ni-Cu Occurrence - 1988, Pyramid - 1967, Firesteel - 1967 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2011-Mar-16 |
| Date Last Modified | 2023-Aug-03 |
| Created By | |
| Revised By |
Primary Commodities: Copper, Nickel
Township or Area: Hanniwell
Latitude: 49° 3' 26.24" Longitude: -90° 53' 27.39"
UTM Zone: 15 Easting: 654080 Northing: 5435967 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52G02SW
Point Location Description: field visit with GPS
Location Method: Field Visit with GPS
Access Description: Access is by a logging road that intersects Highway 17 at a point approximately 16 km west of Upsala, at the Graham Road-Highway 17 intersection. Proceed west along this road for about 16 km and then NW 2 km on a bush road to the occurrence.
1967: Noranda drilled 4 DDH totalling 449 m. 1987-90: L. Chapman conducted trenching, sampling, and drilled 2 Winkie holes totalling 89.1 m. 1993: L. Chapman conducted prospecting. 1995: L. Chapman drilled 1 DDH totalling 85.3 m.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.5576 | 52G02SW0011 | 52G02SW0011 |
| W9640-00297 | 52G02SW0003 | 52G02SW0003 |
| 11 | 52G02SW0014 | 52G02SW0014 |
| 13 | 52G02SW9183 | 52G02SW9183 |
| 12 | 52G02SW0013 | 52G02SW0013 |
Province: Superior
Subprovince: Wabigoon
Belt: Lumby Lake
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Gabbro | 1 | Gabbroic Dyke |
|---|---|---|---|---|
| Ironstone-unsubdivided | 2 | |||
| Mafic lava flow-unsubdivided | 3 |
Jan 19, 2018 (Therese Pettigrew) - Mafic volcanic flows and iron formation have been intruded by porphyritic gabbroic dykes. The emplacement of these NW-trending dykes has resulted in the brecciation and partial assimilation of the volcanic host rock. Outcrop consists of relatively undeformed mafic volcanic flows and pyroclastics, brecciated volcanic rocks, porphyritic gabbroic rock, gabbro with volcanic xenoliths, and volcanic/gabbro breccia. A small vestige of banded iron formation is exposed immediately south of the trench.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrrhotite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore |
Jan 19, 2018 (J Scott) - Copper and nickel sulfides associated with a mafic dike crosscutting iron formation
Jan 19, 2018 (Therese Pettigrew) - Sample JFS-39-91 assayed 0.006 opt Au (0.187 gpt Au) and 5280 ppm Cu (Lavigne et al., 1992). Mineralization occurs as massive to disseminated pyrrhotite, pyrite and chalcopyrite in a pyroclastic rock. Dimethylglyoxine field test indicates that nickel is also present, although the nickel mineral was not identified. Assays from grab samples yielded results lower than anticipated. These are: 0.185% Cu; 0.10% Ni; 5 ppb Pt; 16 ppb Pd; 17 ppb Au; trace Ag (Lavigne et al., 1991).
Article - Thunder Bay Resident Geologist's District-1991
Publication Number: MP158.005 Page: 98 Date: 1997
Author: Lavigne Jr. M.J., Scott J.F., Sarvas P.
Publisher Name: Ontario Geological Survey
Location:
Article - Thunder Bay Resident Geologist's District - 1990
Publication Number: MP152.005 Page: 120-121 Date: 1997
Author: Lavigne Jr. M.J., Scott J.F., Sarvas P.
Publisher Name: Ontario Geological Survey
Location:
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