Ontario Geological Survey
Permanent Link to this Record:
MDI31F11SE00017
| Record Name(s) | James Occurrence - 1980 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1986-May-26 |
| Date Last Modified | 2022-Mar-04 |
| Created By | |
| Revised By |
Primary Commodities: Thorium
Secondary Commodities: Uranium
Township or Area: Wilberforce, Wilberforce
Latitude: 45° 30' 49.55" Longitude: -77° 0' 41.94"
UTM Zone: 18 Easting: 342875 Northing: 5041994 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F11SE
Point Location Description: approximate location of outcrop
Location Method: Data Compilation
Access Description: The occurrence is in a field on the side of a hill, 75-100 m west of a house on the west side of a gravelled township road, approximately 1 km north of Knightingdon on the Bonnechere River. Knightingdon is about 5.6 km southeast of Eganville by gravel road along the west bank of the Bonnechere River.
Province: Grenville
Subprovince: Central Metasedimentary Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Host |
|---|---|---|---|---|
| Gneiss-Unsubdivided | 2 | Contains |
May 14, 2013 (A Wilson) - The pegmatite is a pink granite pegmatite, crudely zoned and cross-cutting a light grey felsic gneiss of trondhjemite to rhyodacitic composition. The pegmatite contains abundant quartz and pink to slightly reddish microcline. There is an irregular discontinuous quartz core and a border zone containing magnetite and thorite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Thorite | Economic | Ore | ||||
| 2 | Magnetite | Economic | Ore |
May 14, 2013 (A Wilson) - Radioactivity levels over an area containing a red vitreous mineral reached 4000 cpm on the U+Th spectrum and 1000 cpm on the Th spectrum. A grab sample of the pegmatite assayed 90 ppm U3O8 and 620 ppm Th. Readings from a shallow pit in granite pegmatite gave values up to 800 cpm on the U+Th scale.
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
Publication - Canadian deposits of uranium and thorium; Geological Survey of Canada, Economic Geology Series 16
Publication Number: GSC EconGeol 16 Scale: Date: 1952
Author: Lang, A.H.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102450
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
Location:
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
Location:
Map - Geological series, radioactive mineral deposits of the Pembroke-Renfrew area, southern Ontario
Publication Number: P2210 Scale: 1:126,720 Date: 1980
Author: Masson S.L., Gordon J.B., Storey C.C.
Publisher Name: Ontario Geological Survey
Location:
Map - Renfrew area, Province of Ontario
Publication Number: ARM53B Scale: 1:126,720 Date: 1998
Author: Satterly J.
Publisher Name: Ontario Dept. of Mines
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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