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Shiromaru Mine

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


Width: 5mm. A group fo sérandite. The group of tabular pale pink crystals exhibiting perfect cleavage is sérandite. The massive white part is albite or celsian.

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

Sérandite from this location was described in 1987.

Other localities

  • Shiromaru Mine (Bedded Mn, Tabular)
  • Tanohata Mine (Bedded Mn, Fibrous)
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