Ontario Geological Survey
Permanent Link to this Record:
MDI31C11SW00034
| Record Name(s) | Black River Garnet - 2000 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1981-Dec-03 |
| Date Last Modified | 2022-May-10 |
| Created By | |
| Revised By |
Primary Commodities: Garnet (Nonmetals)
Township or Area: Elzevir
Latitude: 44° 32' 15.58" Longitude: -77° 21' 23.93"
UTM Zone: 18 Easting: 312771.698 Northing: 4934294.017 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31C11SW
Point Location Description: Dot symbol ' gt ' just S of Hwy 7 and WSW of Actinolite.
Location Method: Conversion from MDI
Access Description: S of the bridge across the Black River on the Madoc-Actinolite road. The best outcrop is a large protruding rock opposite the S point of an island, 1/4 ml S of the bridge.
Mineral location - garnet. Suggested as a mining possibility for abrasives in 1927 - easy to concentrate, though the garnets might be too dark in colour. The pure white muscovite could possibly have been saved as a by-product.
Province: Grenville
Geological Age: Mesoproterozoic
Dec 07, 2005 (C Papertzian) - Dark brown-black, well-formed garnets occur in a mica-hornblende schist. These schists can be traced for about 1/2 ml in a band that is about 100 ft across. The zone with the largest crystals (about cherry size) is 15 ft wide and near the N contact between schists and micaceous argillites. Syenite gneiss lies to the S.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Garnet | Economic | Ore | ||||
| 10 | Muscovite | Economic | Ore |
Publication - Abrasives, products of Canada, technology and application, part III, garnet; Canada Mines Branch, Publication 677
Publication Number: CMB Pub 677 Page: 12, 29, 42 Date: 1927
Author: Eardley-Wilmot, V L
Publisher Name: Canada Mines Branch
Location: https://doi.org/10.4095/306527
MonoMap - Geological notes for maps nos. 2053 and 2054, Madoc-Gananoque area
Publication Number: S012 Page: 19 Date: 1997
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Non-metallic mineral resources of Hastings County
Publication Number: ARV39-06.003 Page: 34 Date: 1998
Author: Osborne F.F.
Publisher Name: Ontario Dept. of Mines
Location:
Book - Geology and Minerals of Ontario
Publication Number: Page: 342 Date: 1929
Author:
Publisher Name: Garden City Press
Location: Tweed RGP
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