Ontario Geological Survey
Permanent Link to this Record:
MDI000000001707
| Record Name(s) | Sullivan Island Carbonatite - 1982 |
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| Related Record Type | |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 2014-Jun-02 |
| Date Last Modified | 2023-Jun-12 |
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| Revised By |
Primary Commodities: Rare Earth Elements, Cerium
Secondary Commodities: Zircon, Uranium
Township or Area: Westmeath
Latitude: 45° 45' 10" Longitude: -76° 47' 6"
UTM Zone: 18 Easting: 361169.6 Northing: 5068129.38 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F10NE
Point Location Description: Carbonatite outcrop shown, southwest Sullivan Island.
Location Method: Field Visit
OGS Report 212 mentions “trenching” on site but no additional information regarding date, commodity sought or who completed work is given.
Province: Grenville
Subprovince: Central Gneiss Belt
Geological Age: Late Precambrian Geochronological Age: 1.05Ga Geochron. Age Ref.: Satterly Lab, preliminary, R 212
| Rock Type | Rank | Composition | Texture | Relationship | Carbonatite-Unsubdivided | 1 | Is |
|---|
Jun 27, 2014 (P Sangster) - Most of the complex consists of partly fenitized clastic siliceous metasediments, mainly rocks of map-unit 6a. Fenitization is expressed as zones of intense hematitization localized by abundant fractures in which coarse-grained aggregates and crystals of alkalic amphibole, alkalic pyroxene, and alkalic feldspar have grown metasomatically. Silicocarbonatite consisting mainly of calcite, apatite, titanite, sodic pyroxene, amphibole, phlogopite, and perthitic potassic feldspar; biotite, allanite, pyrite, hematite, and iron-titanium oxide minerals are locally abundant. In places, lenses of carbonatite containing coarse crystals of brownish to red apatite are present in the carbonatite. Zircon as euhedral crystals up to 2 mm across is invariably present in the silicocarbonatite and carbonatite and forms up to 2 percent of these rocks.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Allanite | Economic | Ore | ||||
| 2 | Zircon | Economic | Ore | ||||
| 3 | Apatite | Economic | Ore |
| Rank | Classification |
|---|---|
| 1 | Carbonatite |
| Rank | Characteristic |
|---|---|
| 1 | Discordant |
MonoMap - Summary of metallogeny, Renfrew County area
Publication Number: R212 Page: 37-38 Date: 1983
Author: Lumbers S.B.
Publisher Name: Ontario Geological Survey
Location:
Map - Cobden, Precambrian geology
Publication Number: M2460 Scale: 1:100,000 Date: 1983
Author: Lumbers S.B.
Publisher Name: Ontario Geological Survey
Location:
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