Hydrothermal rhodochrosite veins mined for manganese and base metals. This was once the largest of Japan's numerous manganese mines; now closed. (1958 production: 105,652 tons crude rhodochrosite.) The Uwaban No. 5 vein also carried nickel minerals in a dolomite veinlet.
Mineral List:52 entries listed. 45 valid minerals. 1 type locality (valid mineral).
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