Ontario Geological Survey
Permanent Link to this Record:
MDI000000002017
| Record Name(s) | DDH Mm01-01 - 2001 |
|---|---|
| Related Record Type | |
| Record Status | Occurrence |
| Date Created | 2016-Sep-22 |
| Date Last Modified | 2022-Jan-05 |
| Created By | A Wilson |
| Revised By | A Wilson |
Primary Commodities: Nickel, Magnesium, Iron
Secondary Commodities: Manganese, Chromium, Cobalt
Township or Area: Riggs
Latitude: 48° 19' 1.56" Longitude: -84° 14' 33.78"
UTM Zone: 16 Easting: 704408.32 Northing: 5355220.31 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C08SW
Point Location Description: drill co-ordinates, SE corner of Riggs Township
Location Method: Data Compilation
Access Description: The site is accessible via a skidoo trail on the south side of Jimmy-John Lake.
2001: Colbert Diamond Drilling Ltd. – DD-1-100 m; assays
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| WP Riggs-63/2.22851 | 42C08SE2015 | 42C08SE2015 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Michipicoten
Geological Age: Neoarchean
Metamorphism Grade: Greenschist
| Rock Type | Rank | Composition | Texture | Relationship | Mafic Tuff | 1 | Tuffaceous | Footwall |
|---|---|---|---|---|
| Gabbro | 2 | Olivine | Net-Textured | Host |
Sep 26, 2016 (A Wilson) - The mafic metavolcanics are reddish-brown to dark green. The rocks are fine grained, tuffaceous and have occasional carbonate amygdules. This unit is underlain by 94 m of olivine diabase/gabbro. The texture is medium to coarse grained with up to 15-20 olivine content.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Olivine | Economic | Ore |
Sep 26, 2016 (A Wilson) - Chromium assays in the drill hole range from 0.19% to 0.49%, nickel values range from 35 to 1160 ppm. TiO2 values range from 0.478 to 1.730%; MgO values range from 14.4% to 27.0%; cobalt values range from 13 to 107 ppm, over the length of the drill core.
| Rank | Classification |
|---|---|
| 1 | Mafic-Ultramafic Intrusion |
| Rank | Characteristic |
|---|---|
| 1 | Stratiform |
MonoMap - Geology of Riggs and West townships, District of Algoma
Publication Number: R174 Scale: Date: 1978
Author: Srivastava P., Bennett G.
Publisher Name: Ontario Geological Survey
Map - Riggs and West townships, Algoma District
Publication Number: M2353 Scale: 1:31,680 Date: 1977
Author: Srivastava P., Bennett G., Elmhirst F., Andrews M.D.
Publisher Name: Ontario Geological Survey
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For detailed information regarding this mineral record please contact the Sault Ste. Marie Resident Geologist District Office