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Shiromaru Mine

Shiromaru, Okutama city, Nishi-Tama county, Tokyo, Japan


Field of view: 5mm. A vein of tamaite. The micaceous pale yellow crystals are tamaite. The surrounding massive opaque white parts are celsian or hyalophane.

Recovered from a vein of celsian or hyalophane in a chert-hosted bedded manganese deposit subjected to Zeolite facies metamorphism.

The first tamaite in the world was described from this location in 2000.

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