Ontario Geological Survey
Permanent Link to this Record:
MDI31F10SW00039
| Record Name(s) | Woermke Sample No.4 - 1954, Sample R-77-90-3 - 1977 |
|---|---|
| Related Record Type | Simple |
| Record Status | Occurrence |
| Date Created | 1986-May-23 |
| Date Last Modified | 2022-Jan-05 |
| Created By | Q Unknown |
| Revised By | A Wilson |
Primary Commodities: Uranium, Thorium
Secondary Commodities: Apatite (Gemstones), Fluorite
Township or Area: Ross
Latitude: 45° 37' 30.97" Longitude: -76° 52' 28.94"
UTM Zone: 18 Easting: 353861 Northing: 5054123 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31F10SW
Point Location Description: approximate
Location Method: Data Compilation
Access Description: The occurrence lies on a ridge approximately 488 m N50E from Hwy 17 at a point 1.6 km south of the road betweed Cobden and Eganville.
Province: Grenville
Subprovince: Central Metasedimentary Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Apatite-Fluorite-Calcite | Is |
|---|---|---|---|---|
| Gneiss-Unsubdivided | 2 | Contains |
May 13, 2013 (A Wilson) - An apatite-fluorite-calcite vein intruding biotite hornblende calc-silicate gneiss is radioactive over a small area. Sparse uranothorite and rare pyrite occur in the vein, as well as abundant diopside, sphene, hornblende, and biotite. The apatite-fluorite-calcite veins appear to be stratgraphically controlled and restricted to biotite hornblende calc-silicate gneiss with minor interbedded amphibolite and quartzo-feldspathic gneiss. The veins locally exhibity intrusive relatioships within1-2 m of contacts.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Uranothorite | Economic | Ore | ||||
| 3 | Diopside | Economic | Ore | ||||
| 1 | Pyrite | Economic | Gangue | ||||
| 2 | Calcite | Economic | Gangue | ||||
| 4 | Sphene | Economic | Gangue | ||||
| 5 | Apatite | Economic | Gangue | ||||
| 6 | Fluorite | Economic | Gangue |
May 13, 2013 (A Wilson) - A sample collected by E.R. Woermke in 1954 assayed 0.06% U308 and 0.5% Th02 (calculated). A selected sample collected by the OGS assayed 0.14% U308 and 0.095% Th02
Dec 07, 2005 (D Laidlaw) - Host is an apatite-fluorite carbonate vein intrusive into calc-silicate gneiss, granite and amphibolite.
| Rank | Classification |
|---|---|
| 1 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
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
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
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
Map - Cobden, Precambrian geology
Publication Number: M2460 Scale: 1:100,000 Date: 1983
Author: Lumbers S.B.
Publisher Name: Ontario Geological Survey
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