Ontario Geological Survey
Permanent Link to this Record:
MDI31M05SW00022
| Record Name(s) | Sugarloaf Island Occurrence - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect Without Reported Reserves or Resources |
| Date Created | 1991-Mar-25 |
| Date Last Modified | 2022-Dec-06 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Cobalt
Township or Area: Brigstocke
Latitude: 47° 15' 30.91" Longitude: -79° 53' 45.1"
UTM Zone: 17 Easting: 583536.53 Northing: 5234491.51 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 31M05SW
Point Location Description: Shaft and adit on east side of Sugarloaf Island, Anima-Nipissing Lake
Location Method: Data Compilation
Access Description: This occurrence is located on a patented island near the southern part of Lake Anima Nipissing in Brigstocke Township.
Circa-1926: prospecting. 15 m adit, and 4 m (flooded) ASSAYS, VEIN: QUARTZ VEIN WITH UP TO 45.3G/T AU and 0.059% CO.
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Formation Group: Cobalt Group
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Diabase | 1 | Nipissing Diabase | Intrudes |
|---|---|---|---|---|
| Vein | 2 | Quartz | Contains |
Nov 01, 2017 (A Wilson) - This occurrence is located on a patented island near the southern part of Lake Anima Nipissing in Brigstocke Township..Associated brecciation and/or disseminated sulphides and/or other vein systems are absent in the host diabase. Intense quartz veining is prominent at the nearby Archean-Proterozoic unconformity located to the west of the Sugar Loaf Island occurrence. These barren veins cut both Archean rocks and Early Proterozoic rocks of the Coleman Member and are probably related to the intrusion of Nipissing diabase. This geological environment is analogous to the Cobalt Camp and thus further prospecting and exploration for Cobalt-type mineralization is recommended in the area around the Sugar Loaf occurrence.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore |
Nov 01, 2017 (A Wilson) - Quartz vein with up to 45.3 g/t Au, 0.26% Ag/ton., 0.590 ppm Co and 580 ppm Cu .
| Rank | Classification |
|---|---|
| 1 | Vein (Cobalt-Type) |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1991 | 5 |
Silver 26 Percent Cobalt 590 Parts Per Million Copper 580 Parts Per Million |
MDI |
Map - Geological series, Precambrian geology, Brigstocke Township, District of Timiskaming
Publication Number: P3115 Scale: 1:15,840 Date: 1988
Author: Born P., Burbidge G.H.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Precambrian Geology, Brigstocke and Kittson Townships
Publication Number: R275 Date: 1997
Author: Born P., Burbidge G.H.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Brigstocke Township
Publication Number: M2565 Scale: 1:20,000 Date: 1997
Author: Born P., Burbidge G.H.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Precambrian geology of Brigstocke and Kittson townships, District of Timiskaming
Publication Number: OFR5807 Date: 1991
Author: Born P., Burbidge G.H.
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Kirkland Lake Resident Geologist District Office