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Ontario Geological Survey
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MDI31D16NW00148
| Record Name(s) | Hotspur West - 1915 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1993-Apr-26 |
| Date Last Modified | 2022-Apr-25 |
| Created By | |
| Revised By |
Primary Commodities: Nepheline Syenite, Corundum
Township or Area: Monmouth
Latitude: 44° 56' 42.36" Longitude: -78° 16' 25.11"
UTM Zone: 17 Easting: 715084 Northing: 4980468 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31D16NW
Point Location Description: General
Location Method: Data Compilation
Access Description: 0.6 km west of Hotspur.
Province: Grenville
Subprovince: Central Metasedimentary Belt
Terrane: Elzevir
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Syenite | 1 | Hornblende | Host |
|---|
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Corundum | Economic | Ore | ||||
| 2 | Nepheline | Economic | Ore |
Feb 01, 2017 (A Wilson) - On lot 26,concession XII, of Monmouth, small crystals of corundum were noticed in one or two places. This rock containing the mineral is the albitic phase or white alkali syenite (albite anorthosite) which marks the transition between the granite or quartzose syenite and the nepheline syenite. It is usually rather coarse in grain and dark in colour showing on weathered surfaces a little nepheline. There are also, as is often the case in this variety, rather large disseminated grains of magnetite. The rock has a distinct foliation due chiefly to the approximately parallel arrangement of the biotite of which a large amount is present. The thin sections examined show the rock to be composed mainly of albite, orthoclase, microcline, and a little microperthite with nepheline, biotite, and calcite; magnetite and apatite are greatly subordinate in amount. The albite in comparison with the potash feldspar is present in the proportion of about 18 :1. Corundum has also been noticed in rock of similar mineralogical composition on lot 15, concession VIII; lot 28, concession XIII; and also at the fork of the road a little west of Hotspur post-office.
Publication - Excursions in the Eastern Townships of Quebec and the eastern part of Ontario; International Geological Congress, Guidebook 2
Publication Number: GSC GB 2 Page: 56 Date: 1913
Author:
Publisher Name: Geological Survey of Canada
Location:
Publication - Corundum, Its Occurrence, Distribution, Exploitation and Uses; Geological Survey of Canada, Memoir no. 57
Publication Number: GSC Mem 57 Page: 181 Date: 1915
Author: Barlow, A.E.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/101547
MonoMap - Industrial minerals of the Algonquin region
Publication Number: OFR5425 Page: 44, 242 Date: 1983
Author: Martin W.
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office