Ontario Geological Survey
Permanent Link to this Record:
MDI31F04SE00063
| Record Name(s) | Hermon Sillimanite Occurrence - 1988 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1993-Apr-21 |
| Date Last Modified | 2022-May-18 |
| Created By | |
| Revised By |
Primary Commodities: Sillimanite
Township or Area: Mayo
Latitude: 45° 6' 11.11" Longitude: -77° 39' 6.31"
UTM Zone: 18 Easting: 291376.47 Northing: 4997823.287 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F04SE
Point Location Description: approximate
Location Method: Data Compilation
Access Description: 1.1 km east of Bulpit Lake.
Province: Grenville
Subprovince: Central Metasedimentary Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Sheared | Host |
|---|---|---|---|---|
| Intermediate lava flow-unsubdivided | 2 | Sheared | Host |
Oct 19, 2011 (A Wilson) - Sillimanite is found in metavolcanic rocks within the McArthur's Mills shear zone. The outcrop area that hosts substantial sillimanite is approximately 800 m long.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Sillimanite | Economic | Ore |
Oct 19, 2011 (A Wilson) - The outcrops contain sillimanite clots ranging from 1 to 2 cm in size. These clots form up to 25% of the outcrops.
Book - 1988, Sillimanite Report
Publication Number: Page: 53-54 Date: 1988
Author:
Publisher Name: Ontario Geological Survey
Location: Tweed RGP
Map - Precambrian Geology, Bancroft Area
Publication Number: P3385 Scale: 1:50,000 Date: 1998
Author: Lumbers S.B., Vertolli V.M.
Publisher Name: Ontario Geological Survey
Location:
Map - Dungannon and Mayo townships, County of Hastings, Ontario
Publication Number: M1955-08 Scale: 1:31,680 Date: 1997
Author: Hewitt D.F., James W.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Geology of Dungannon and Mayo townships
Publication Number: ARV64-08 Page: 18, 59 Date: 1998
Author: Hewitt D.F., James W.
Publisher Name: Ontario Dept. of Mines
Location:
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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office