Ontario Geological Survey
Permanent Link to this Record:
MDI000000002308
| Record Name(s) | Inco East Block - 1988 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2019-Jul-26 |
| Date Last Modified | 2023-Jun-14 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Ware
Latitude: 48° 33' 52.42" Longitude: -89° 28' 26.26"
UTM Zone: 16 Easting: 317483 Northing: 5382007 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A11SW
Point Location Description: Sample 93-RIF-0086 on p. 35 of R294 converted to NAD83
Location Method: Data Compilation
1986: Inco Gold Company Ltd. carried out ground magnetic and VLF-EM surveys. 1988: Inco carried out geological and radiometric surveys and sampling. 1990: R. Oja conducted prospecting.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.11386 | 52A11SW0051 | 52A11SW0051 |
| 63.5951 | 52A11SW0001 | 52A11SW0001 |
| 2.9229 | 52A11SW0054 | 52A11SW0054 |
Province: Superior
Subprovince: Quetico
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Gabbro | 1 | Gabbro |
|---|---|---|---|---|
| Vein | 2 | Quartz | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Galena | Economic | Ore | ||||
| 4 | Pyrrhotite | Economic | Ore |
Jul 26, 2019 (Therese Pettigrew) - Located within one of the narrow belts of predominantly mafic metavolcanic rocks within the Quetico Subprovince, in central Ware Township, this property is underlain by a locally pegmatitic gabbro body intruding medium- to fine-grained flows. A northeast-trending zone of shearing and fracturing within the gabbro is cut by an east-northeast-trending, 1.5 m wide, pre- to syndeformational quartz vein, a later subparallel feldspar porphyry dike and a series of narrow lamprophyre dikes with various orientations. Up to 5% finely disseminated pyrite and up to 2% chalcopyrite, galena and pyrrhotite occurs within the sheared gabbro, within chloritic inclusions and fragments of gabbro in the quartz vein, and infilling fine fractures throughout the vein. Alteration in the vicinity of the sheared zone is patchy and consists of moderate chloritization and silicification, and pervasive carbonatization. Sampling by OGS staff returned values up to 263 ppb Au (Brown, 1995). Samples of the vein taken by Inco yielded values of 5.60 and 3.05 ppm Au (Assessment record 52A11SW0051).
MonoMap - Precambrian Geology, Oliver and Ware Townships
Publication Number: R294 Page: 43 Date: 1995
Author: Brown G.H.
Publisher Name: Ontario Geological Survey
Location:
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