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Ontario Geological Survey
Permanent Link to this Record:
MDI000000001259
| Record Name(s) | OGS Sample T-561 - 1977, Grattan Township Occurrences - 1977, Lake Clear Occurrences - 2001 |
|---|---|
| Related Record Type | |
| Record Status | Occurrence |
| Date Created | 2011-Jun-01 |
| Date Last Modified | 2022-Jan-05 |
| Created By | A Wilson |
| Revised By | A Wilson |
Primary Commodities: Thorium
Secondary Commodities: Uranium
Township or Area: Grattan
Latitude: 45° 27' 24.94" Longitude: -77° 4' 57.48"
UTM Zone: 18 Easting: 337166.999 Northing: 5035820.996 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F06NE
Point Location Description: approximate
Location Method: Data Compilation
1977: Ontario Geological Survey - sampling and analysis
Province: Grenville
Subprovince: Central Metasedimentary Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Granite | Host |
|---|---|---|---|---|
| Syenite | 2 | Porphyritic | Contains | |
| Quartz Monzonite | 3 | Gneissic | Contains |
Jun 10, 2011 (A Wilson) - The showing occurs in granitic pegmatite within massive to gneissic syenite and gneissic quartz monzonite. Granitic pegmatite dikes cross cut both facies.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Uranothorite | Economic | Ore |
Jun 10, 2011 (A Wilson) - Grab samples collected by Themistocleous returned: 0.01% U3O8, 1.30% K2O, and 0.29% Th.
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
MonoMap - Geology of the Clontarf area, Renfrew County
Publication Number: R209 Scale: Date: 1981
Author: Themistocleous S.G.
Publisher Name: Ontario Geological Survey
Mono - Uranium and thorium deposits of southern Ontario
Publication Number: OFR5311 Scale: Date: 1981
Author: Gordon J.B., Rybak U.C., Robertson J.A.
Publisher Name: Ontario Geological Survey
MonoMap - Radioactive mineral deposits of the Pembroke-Renfrew area
Publication Number: MDC023 Scale: Date: 1981
Author: Masson S.L., Gordon J.B.
Publisher Name: Ontario Geological Survey
Map - Geological series, Clontarf area, Renfrew County, southern Ontario
Publication Number: P1560 Scale: 1:15,840 Date: 1978
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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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office