Cu-Zn-bearing veinlets and dolerite dikes traversing Pb-Zn-bearing skarn formed from impure Mn-bearing Miocene limestone. The limestone bed is sandwiched between propylitized Miocene pyroclastics and andesitic or rhyolitic breccia. The skarn body itself was worked as Pb-Zn ore; the younger dolerite dikes as rich Cu-Zn ore.
Ref:
Geology and Mineral Resources of Japan, pp. 163, 182-183 (Geological Survey of Japan, 1960).
Mineral List:12 entries listed. 10 valid minerals.
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