Uranium Deposit Report
Deposit : |
Lianshanguan, Yinshan-Liahoe U province |
Country : |
China |
General Information |
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Geological District |
China | ||
Geological Region |
China | ||
Political/Geographical Province |
Liaoning | ||
Last Data Update |
2008-01-01 | ||
Owner(s) |
20 %, Idemitsu | ||
Operator |
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Technical Information |
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Tonnage Range (t U)
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2,500 - 5,000 | ||
Grade Range (% U)
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0.50 - 1.00 | ||
Deposit Status
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Operating | ||
Current Processing Plant
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Lianshanguan | ||
Cumulative Production (t U)
|
0 | ||
Production Period
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Produced Grade (% U)
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General Remarks |
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Geological Information |
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Deposit Type |
Vein | ||
Geological Setting |
Lithology: Archean migmatitic granite and metamorphics overlain by Lower Proterozoic metasediments-metavolcanics. Main host rock is impure, grey and black-grey quartzite enriched in clay, iron, carbon, sulfur and other impurities ; Stratigraphy=Archean-Lower Prote Tectonics: Lianshanguan dome/brachyaxial anticline Alteration: Country rocks: widespread K and Na migmatization; host rocks: weakly developed albitization, chloritization, sericitization, silicification, carbonatization, sulfidization with pyrite, galena, sphalerite, and rare fluoritization Hostrock Age: Granitoids: 2,750 and 2,530 Ma | ||
Age of Mineralization |
(1) 1,894 Ma, (2) 1,829 Ma | ||
Mineralization |
Ore Mineralogy: (1) Pitchblende, minor coffinite associated with Fe, Cu, Pb, Zn, Mo sulfides and minor chlorite, sericite, quartz, and carbonates; (2) pitchblende associated with calcite and fluorite Mineralization Description: (1) Ore of simple composition in breccias and faults within alkaline feldspar metasomatized zones, (2) disseminated uraninite along schistosity and foliation in quartz-mica schist interbedded with quartzite, (3) veins and veinlets of sericite and secondar Ore Controls: Structure, litho-stratigraphy, metasomatic lithology | ||
MetallogenicAspects |
Ore bodies are commonly emplaced in albitized-chloritized rocks and hence albitization and chloritization are thought to have caused U mobilization, migration, and preconcentration | ||
Age of Mineralization |
(1) 1,894 Ma, (2) 1,829 Ma | ||
DepositShape |
(1) Lenticular stockwork lodes, (2) layered lenses | ||
DepositDimensions |
Deposit Width: (1) Lenticular lodes Deposit Length: (1) 90 m, (2) up to Deposit Depth Top: 38 m Deposit Depth Bottom: 250 m Deposit Thickness: (1) up to 5.6 m, (2) | ||
GeologicalRemarks |
Metasomatic vein-type | ||
Metallogenic Aspects |
Ore bodies are commonly emplaced in albitized-chloritized rocks and hence albitization and chloritization are thought to have caused U mobilization, migration, and preconcentration | ||