Uranium Deposit Report
Deposit : |
Dzhidely |
Country : |
Kazakhstan |
General Information |
|||
Geological District |
North Betpakdala | ||
Geological Region |
Pribalkhash | ||
Political/Geographical Province |
Karaganda Region | ||
Last Data Update |
2005-01-01 | ||
Owner(s) |
Kazatomprom | ||
Operator |
Kyrgyzstan Government | ||
Technical Information |
|||
Tonnage Range (t U)
|
2,500 - 5,000 | ||
Grade Range (% U)
|
0.20 - 0.50 | ||
Deposit Status
|
Depleted | ||
Current Processing Plant
|
|||
Cumulative Production (t U)
|
4000 | ||
Production Period
|
1966-1978 | ||
Produced Grade (% U)
|
0.3 | ||
General Remarks |
|||
Geological Information |
|||
Deposit Type |
Volcanic | ||
Geological Setting |
Lithology: Three suites of Middle to Upper Devonian volcanics contain U mineralization (from top to bottom): plagioclase porphyry, tuff-sandstone, and volcanic breccia; two horizons of welded felsite tuff, up to 170 m thick (principal host rocks); and plagioclase quartz porphyry, tuff, ignimbrite, and lava-breccia, up to 350 m thick. NW-SE and W-E striking diabase and diabase porphyry dikes dissect this volcanic suite. Tectonics: Principal structures are the NW-SE and NE-SW trending Northern, Southern and Dzhideli faults. Alteration: Host rock alterations produced pre-ore chlorite-albite, ore related pyrite-ankerite, and post ore quartz-calcite-sulfide. Hostrock Age: Middle to Upper Devonian | ||
Age of Mineralization |
Primary mineralization is dated at 360±8 m.y., and redistributed mineralization at 210-100 m.y.. | ||
Mineralization |
Ore Mineralogy: Mineralization is of polymetallic nature dominated by uranium-molybdenum associated with As, Bi, Co, Ga, Pb, Sb, and Zn. Two ore types are distinguished: femolite-pitchblende and pitchblende-sooty pitchblende. Uranophane, beta-uranotile, autunite, etc are Mineralization Description: Ore bodies #1, 2, 5, 6, and 8 have a lenticular shape and occur in fault zones within welded felsite tuff at depths from 30 to 180 m. Ore bodies #1, #2 and #5 contain 95 % of the Dzhideli resources. Ore body #1 is 400 m long, 0.5 to 35 m (av.10 m) thick, Ore Controls: Lithological and structural control: Middle to Upper Devonian acid tuffs cutted by the NW-SE and NE-SW trending faults. | ||
MetallogenicAspects |
|||
Age of Mineralization |
Primary mineralization is dated at 360±8 m.y., and redistributed mineralization at 210-100 m.y.. | ||
DepositShape |
|||
DepositDimensions |
Deposit Width: 200 to 500 m Deposit Length: 1200 m Deposit Depth Top: 30 m Deposit Depth Bottom: 180 m | ||
GeologicalRemarks |
|||
Metallogenic Aspects |
|||