Uranium Deposit Report
Deposit : |
Tono Ore Field |
Country : |
Japan |
General Information |
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Geological District |
Japan | ||
Geological Region |
Japan | ||
Political/Geographical Province |
Gifu Prefecture | ||
Last Data Update |
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Owner(s) |
1 %, Others | ||
Operator |
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Technical Information |
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Tonnage Range (t U)
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5,000 - 10,000 | ||
Grade Range (% U)
|
0.03 - 0.05 | ||
Deposit Status
|
Dormant | ||
Current Processing Plant
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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 |
Sandstone - Roll Front | ||
Geological Setting |
Lithology: Clastic and pyroclastic sediments composed of basal fluvial-lacustrine facies in paleochanels overlain by marine strata ; Stratigraphy=Miocene-Pliocene Tectonics: Intermontane basins with paleochannels incised preferentially into granitic basement Alteration: As in Ningyo-Toge Ore Field Hostrock Age: Miocene | ||
Age of Mineralization |
?? (epigenetic) | ||
Mineralization |
Ore Mineralogy: Unoxidized ore: pitchblende, coffinite; oxidized ore: autunite, uranocircite. Large part of U is adsorbed on clay and zeolite minerals, limonite and carbonaceous debris Mineralization Description: As in Ningyo-Toge Ore Field Ore Controls: As in Ningyo-Toge Ore Field, | ||
MetallogenicAspects |
As in Ningyo-Toge Ore Field | ||
Age of Mineralization |
?? (epigenetic) | ||
DepositShape |
Lenticular to curvilinear | ||
DepositDimensions |
Deposit Width: Tens to a few hundre Deposit Length: Up to 1,000 m (<3 km Deposit Depth Top: Mostly in excess of Deposit Thickness: 1-3m, locally 10m | ||
GeologicalRemarks |
Tono Ore Field includes 8 basal channel sandstone-type deposits in 3 basins. Dimensions refer to individual ore bodies, (*) to Tsukiyoshi (=Tono mine), the largest deposit | ||
Metallogenic Aspects |
As in Ningyo-Toge Ore Field | ||