Ontario Geological Survey
Permanent Link to this Record:
MDI31C15NW00123
| Record Name(s) | Clarendon Sillimanite - 1993 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1993-Mar-11 |
| Date Last Modified | 2024-Apr-09 |
| Created By | |
| Revised By |
Primary Commodities: Sillimanite, Garnet (Nonmetals)
Township or Area: Clarendon
Latitude: 44° 58' 19.66" Longitude: -76° 54' 25.14"
UTM Zone: 18 Easting: 349627.56 Northing: 4981623.18 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31C15NW
Point Location Description: Point just W of Struthers Lake.
Location Method: Conversion from MDI
Access Description: NW of Little Green Lake, 4.0 km N of Ardoch. Access via cottage and logging roads.
Province: Grenville
Subprovince: Central Metasedimentary Belt
Terrane: Mazinaw
Formation Group: Flinton Group
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Schist-Unsubdivided | 1 | Pelitic Schist | Near |
|---|
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Sillimanite | Economic | Ore | ||||
| 2 | Garnet | Economic | Ore | ||||
| 3 | Kyanite | Economic | Ore | ||||
| 4 | Muscovite | Economic | Ore | ||||
| 6 | Staurolite | Economic | Ore | ||||
| 7 | Biotite | Economic | Ore |
May 28, 2021 (Sheree Hinz) - Sillimanite hosted by pelitic schist and associated with garnet, staurolite and some kyanite. The occurrence is about 2.5 km long by 250 m wide and within this area about 40 % of the rock contains more than 20% sillimanite by volume. The pelitic schist unit dips steeply NW and is well-exposed in 30-50 m deep ravines (cross-fractures).
| Rank | Classification |
|---|---|
| 1 | Industrial |
| 2 | Metamorphic |
Book - Industrial Minerals in Eastern Ontario: Clarendon Sillimanite Occurrence - Open File 1672
Publication Number: OF1672 Page: 7 Date: 1988
Author: Geological Survey of Canada
Publisher Name:
Location: Tweed RGP
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