Uranium Deposit Report
Deposit : |
Cluff Lake: Claude |
Country : |
Canada |
General Information |
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Geological District |
West Athabasca (Cluff Lake) | ||
Geological Region |
Athabasca | ||
Political/Geographical Province |
Saskatchewan | ||
Last Data Update |
2009-01-01 | ||
Owner(s) |
20 %, Idemitsu | ||
Operator |
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Technical Information |
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Tonnage Range (t U)
|
10,000 - 25,000 | ||
Grade Range (% U)
|
0.50 - 1.00 | ||
Deposit Status
|
Depleted | ||
Current Processing Plant
|
Cluff Lake Mill | ||
Cumulative Production (t U)
|
2348 | ||
Production Period
|
1982-1989 | ||
Produced Grade (% U)
|
0.367 | ||
General Remarks |
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Geological Information |
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Deposit Type |
Unconformity-Proterozoic Fracture-bound | ||
Geological Setting |
Regional - located in the Carswell impact structure in the western part of the Athabasca Basin. Basement rocks consist of the Peter River (para)gneiss and adjacent Earl River (ortho)gneiss, both intruded by granite and pegmatite. Host rocks - Peter River cordierite, K-feldspar, sillimanite, garnet, biotite gneiss, partly graphitic | ||
Age of Mineralization |
1050 Ma (U-Pb on sulphides), probably an isotopic reset date. | ||
Mineralization |
Description - uraninite, brannerite, jordisite, galena, pyrite, chalcopyrite and hydrocarbon buttons. Uraninite as fibrous replacements, ribboned veinlets, and euhedral crystals in veins. | ||
MetallogenicAspects |
Mineralization controlled by tectonic zones - major EW zone and 2 NE-SW zones. Mineralization in EW structure is a contained in a -zone a boules-, like D zone. | ||
Age of Mineralization |
1050 Ma (U-Pb on sulphides), probably an isotopic reset date. | ||
DepositShape |
veins along structures, less than 10 m wide | ||
DepositDimensions |
600 m long x 200 m wide x max 90 m thick | ||
GeologicalRemarks |
Unconformity Model | ||
Metallogenic Aspects |
Mineralization controlled by tectonic zones - major EW zone and 2 NE-SW zones. Mineralization in EW structure is a contained in a -zone a boules-, like D zone. | ||