Ontario Geological Survey
Permanent Link to this Record:
MDI31F06NE00013
| Record Name(s) | OGS Sample T-227 - 1978, McDonalds Mountain - 1986 |
|---|---|
| Related Record Type | Simple |
| Record Status | Occurrence |
| Date Created | 1986-May-22 |
| Date Last Modified | 2022-Jan-05 |
| Created By | Q Unknown |
| Revised By | A Wilson |
Primary Commodities: Gold
Secondary Commodities: Copper, Zinc, Nickel
Township or Area: Sebastopol
Latitude: 45° 24' 43.86" Longitude: -77° 12' 2.1"
UTM Zone: 18 Easting: 327808.999 Northing: 5031095.999 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F06NE
Point Location Description: Precise
Location Method: Data Compilation
Access Description: South of Opeongo Road and east of Kregurs Creek.
Province: Grenville
Subprovince: Central Metasedimentary Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Gabbro | 1 | Gabbro | Host |
|---|---|---|---|---|
| Syenite | 2 | Adjacent |
Jun 15, 2011 (A Wilson) - The gabbro intrudes metamorphosed wacke and arenites and is intruded by syenite and several granite pgegmatite dikes. The metagabbro is massive, medium- to coarse-grained and in sharp contact with the syenite. The metagabbro has a width of approximately 200 m in the vicinity of the mineralization.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore |
Jun 15, 2011 (A Wilson) - A grab sample collected by Themistocleous in 1978 returned 0.02 oz/t Au, 740 ppm Cu, 146 ppm Zn, 170 ppm Ni. The mineralization occurs in an overgrown trench. Pyrite and pyrrhotite comprise approximately 25-30% of the metagabbro in the trench
MonoMap - Geology of the Clontarf area, Renfrew County
Publication Number: R209 Scale: Date: 1981
Author: Themistocleous S.G.
Publisher Name: Ontario Geological Survey
Map - Clontarf, Renfrew County
Publication Number: M2433 Scale: 1:31,680 Date: 1980
Author: Themistocleous S.G.
Publisher Name: Ontario Geological Survey
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