Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000001089

Record: MDI000000001089

General

Mineral Record Identification
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

Commodities

Primary Commodities: Copper, Nickel



Location

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.



Exploration History

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.


Assessment Work on File

Assessment Work on File
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

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Lumby Lake

Geological Age: Archean  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Gabbro 1 Gabbroic Dyke
Ironstone-unsubdivided 2
Mafic lava flow-unsubdivided 3

Lithology Comments

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.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1PyrrhotiteEconomicOre
2ChalcopyriteEconomicOre
3PyriteEconomicOre

Mineralization Comments

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).



Mineral Record Details

References

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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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office