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Ontario Geological Survey
Permanent Link to this Record:
MDI31F04NW00185
| Record Name(s) | Plunkett North - 1921 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1993-Apr-28 |
| Date Last Modified | 2023-Jun-12 |
| Created By | |
| Revised By |
Primary Commodities: Feldspar (Nonmetals), Uranium, Thorium
Secondary Commodities: Rare Earth Elements
Township or Area: Monteagle
Latitude: 45° 9' 26.86" Longitude: -77° 49' 33.47"
UTM Zone: 18 Easting: 277882.004 Northing: 5004328.001 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F04NW
Point Location Description: General
Location Method: Data Compilation
Access Description: 2.1 km NW of Young Lake.
1921: American Molybdenite Company: pitting
Province: Grenville
Subprovince: Central Gneiss Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Granitic | Host |
|---|---|---|---|---|
| Gneiss-Unsubdivided | 2 | Syenitic | Contains | |
| Marble | 3 | Adjacent |
Feb 24, 2012 (A Wilson) - An irregularly zoned pink granite pegmatite dike, about 4 feet wide, cuts rusty syenitic gneisses and biotite schist. The pegmatite consists mostly of graphic granite and a small quartz core.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Feldspar | Economic | Ore | ||||
| 2 | Betafite | Economic | Ore | ||||
| 3 | Euxenite | Economic | Ore | ||||
| 4 | Pyrochlore | Economic | Ore | ||||
| 5 | Ellsworthite | Economic | Ore | ||||
| 6 | Hornblende | Economic | Gangue |
Feb 24, 2012 (A Wilson) - Betafite, euxenite and pyrochlore occur in narrow fracture zones near the pegmatite borders. Amazonite, ellsworthite, euxenite, titanite, garnet, fluorite and hornblende were observed on the waste dump. OGS sample R-77-44N-2 assayed 4 ppm U3O8 and 17 ppm Th. OGS sample R-77-44N-3 assayed 5 ppm U3O8 and 21 ppm Th. OGS sample R-77-44N-1 assayed 310 ppm U3O8 and 5700 ppm Th. Only sample R-77-44N-1 was collected from the pegmatite.
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
Mono - Uranium and thorium deposits of southern Ontario
Publication Number: OFR5311 Page: 287 Date: 1981
Author: Gordon J.B., Rybak U.C., Robertson J.A.
Publisher Name: Ontario Geological Survey
Location:
Mono - Granitic pegmatites of the Bancroft area, southeastern Ontario
Publication Number: OFR5717 Page: 95 Date: 1990
Author: Goad B.E.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Radioactive mineral deposits of the Pembroke-Renfrew area
Publication Number: MDC023 Page: 114-115 Date: 1981
Author: Masson S.L., Gordon J.B.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Industrial minerals of the Pembroke-Renfrew area, part 2
Publication Number: MDC022 Page: 140-141 Date: 1981
Author: Storey C.C., Vos M.A.
Publisher Name: Ontario Geological Survey
Location:
Map - Monteagle and Carlow townships, County of Hastings, Ontario
Publication Number: M1954-03 Scale: 1:31,680 Date: 1997
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
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:
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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office