Ontario Geological Survey
Permanent Link to this Record:
MDI42C01NE00038
| Record Name(s) | Fletch Occurrence - 2001 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2002-Oct-30 |
| Date Last Modified | 2022-Sep-16 |
| Created By | |
| Revised By |
Primary Commodities: Diamond, Kimberlite
Township or Area: Dolson
Latitude: 48° 9' 47.89" Longitude: -84° 11' 16.14"
UTM Zone: 16 Easting: 709104.19 Northing: 5338275.64 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C01NE
Point Location Description: Stripped outcrop on north side of logging road
Location Method: Field Visit with GPS
Access Description: Drive north along highway 651 for 31 km from the junction of highway 651 and 101 to the intersection with a logging road on the west side of the highway. Drive west for approximately 8 km to the site.
2000-2001: M. Tremblay and J. Robert - prospecting, stripping, sampling. 2002: Geodex Minerals - sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| WP Dolson-4 | 42C01NE2005 | 42C01NE2005 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Michipicoten
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Kimberlite-Unsubdivided | 1 | Host |
|---|---|---|---|---|
| Intermediate lava flow-unsubdivided | 2 | Andesite | Near |
Dec 07, 2005 (A Wilson) - The outcrop is low and rubbly on the north side of the road, and can be traced to the south side of the road by following a boulder train. The kimberlite is dark green to black on weathered surface and contains mantle xenoliths as well as supracrustal inclusions. The surrounding intermediate metavolcanics appear to be tuffaceous and strongly deformed.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Diamond | Economic | Ore |
Dec 07, 2005 (A Wilson) - Geodex Minerals recovered a microdiamond from a 7.8 kg sample of the dike in 2002. Microprobe analysis of the dike has yielded Cr2O3 values up to 70.00 wt%.
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Tabular | 3.2 |
Map - Matchinameigus Lake, Algoma District
Publication Number: M2483 Scale: 1:31,680 Date: 1983
Author: Downes M.J.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Matchinameigus Lake area, District of Algoma
Publication Number: R233 Date: 1983
Author: Downes M.J.
Publisher Name: Ontario Geological Survey
Location:
Book - GEODEX MINERALS PRESS RELEASES
Publication Number: N/A Date: 2002
Author:
Publisher Name:
Location: Timmins RGP
Map - Precambrian Geology Compilation Series - White River Sheet
Publication Number: M2666 Scale: 1:250,000 Date: 2001
Author: Santaguida F.
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Sault Ste. Marie Resident Geologist District Office