Ochiai Mine, Kohsai, Yamanashi Prefecture, Chubu Region, Honshu Island, Japan

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Low temp. metamorphosed Mn ore.
Syngenetic mineralization in Miocene pyroclastic rocks of low-grade laumontite-prehnite-pumpellyite metamorphic facies.

Mineral List:

Albite
Braunite
Calcite
Caryopilite

Clinozoisite
Cryptomelane
Johannsenite
Piemontite

Pumpellyite-(Mn2+) (TL)
Pyrolusite
Quartz
Rhodochrosite

12 entries listed. 12 valid minerals. 1 type locality (valid mineral).

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