Ontario Geological Survey
Permanent Link to this Record:
MDI31F12SW00033
| Record Name(s) | T.J. Hamilton - 1960 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1985-May-29 |
| Date Last Modified | 2023-Jun-12 |
| Created By | |
| Revised By |
Primary Commodities: Thorium, Lanthanum, Cerium, Rare Earth Elements
Secondary Commodities: Yttrium, Uranium
Township or Area: Murchison
Latitude: 45° 31' 29.43" Longitude: -77° 58' 14.55"
UTM Zone: 18 Easting: 268011.916 Northing: 5045549.691 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F12SW
Point Location Description: General
Location Method: Conversion from MDI
Access Description: 2.9 km west of eastern boundary and 2.7 km north of southern boundary of Murchison Tp., northeast of the village of Madawaska on the CNR line.
1960-70: Trenching and 2 drill holes for 78 feet by T.J. Hamilton (Res. Geol. Assessment Files 1 and 2).
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 10 | 31F12SW9552 | 31F12SW9552 |
| W7009-00018 | 31F12NW5001 | 31F12NW5001 |
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Contains |
|---|---|---|---|---|
| Paragneiss | 2 | Adjacent |
Jun 12, 2023 (Therese Pettigrew) - The occurrence comprises two showings. The first is a granite pegmatite dike, 17 to 20 feet wide and exposed for 25 feet. It trends N60E and dips steeply west through gently east-dipping hornblende gneiss and paragneiss. Allanite is concentrated in a fracture zone, in clots up to 3 inches wide. The second showing consists of several dikes concordantly intruding paragneiss which strikes northwest and dips about 10 E. The main dike, traceable for 75 feet, is 12 feet wide. The other dikes are up to 18 inches wide. Allanite occurs in fairly uniformly disseminated crystals and clots (Gordon et al., 1981).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Allanite | Economic | Ore | ||||
| 2 | Thucholite | Economic | Ore | ||||
| 3 | Feldspar | Economic | Ore | ||||
| 4 | Quartz | Economic | Ore | ||||
| 5 | Biotite | Economic | Ore |
Jun 12, 2023 (Therese Pettigrew) - Two drill core samples assayed 0.007% U3O8 over 5 feet and 0.005% U3O8 over 8 feet. A selected sample of high-grade material from the first showing gave a spectrographic analysis of 2% Ce, 2% La, 0.3% Th and 0.05% Y (Gordon et al., 1981).
Publication - Rare earths of the Grenville Sub-Province, Ontario and Quebec; Geological Survey of Canada, Paper 59-10
Publication Number: GSC Paper 59-10 Page: 29-30 Date: 1960
Author: Rose, E R
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/101254
Mono - Uranium and thorium deposits of southern Ontario
Publication Number: OFR5311 Page: 249 Date: 1981
Author: Gordon J.B., Rybak U.C., Robertson J.A.
Publisher Name: Ontario Geological Survey
Location:
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