Ontario Geological Survey
Permanent Link to this Record:
MDI000000001766
| Record Name(s) | Easton Occurrence - 2014 |
|---|---|
| Related Record Type | |
| Record Status | Occurrence |
| Date Created | 2014-Oct-14 |
| Date Last Modified | 2022-Jan-05 |
| Created By | A Wilson |
| Revised By | A Wilson |
Primary Commodities: Thorium, Uranium
Township or Area: Ross
Latitude: 45° 40' 58.76" Longitude: -76° 46' 27.15"
UTM Zone: 18 Easting: 361837 Northing: 5060357 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F10NW
Point Location Description: located on former CNR right of way
Location Method: Field Visit with GPS
Access Description: The site is accessible via a disused CNR right-of-way.
Province: Grenville
Subprovince: Central Metasedimentary Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Gneiss-Unsubdivided | 1 | Semi-Pelitic | Host |
|---|---|---|---|---|
| Gneiss-Unsubdivided | 2 | Calcareous | Host | |
| Syenite | 3 | Pyroxenitic | Gneissic | Host |
| Sandstone | 4 | Greywacke | Adjacent | |
| Conglomerate | 5 | Gneissic | Adjacent |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Thorianite | Economic | Ore | ||||
| 2 | Uraninite | Economic | Ore |
Oct 14, 2014 (A Wilson) - Readings of over 65,000 cpm were obtained from the site. A scintillometer assay measurement of 927 ppm U and 1717 ppm Th were obtained from rock at this site and the adjacent soils yielding values of 571 – 711 ppm U and 1787 – 2291 ppm Th.
Map - Cobden, Precambrian geology
Publication Number: M2460 Scale: 1:100,000 Date: 1983
Author: Lumbers S.B.
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
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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office