TrekGEO > Mineral Trail > Kanto region > Ibaraki pref. > Bertrandite

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Bertrandite

Yamano-o

Makabe village, Sakuragawa city, Ibaraki pref., Japan

This locality is closed to collecting.

Bertrandite

Field of view: 2 mm. Bertrandite associated with beryl. The transparent grains at the center are bertrandite. The transparent basement is a single crystal of beryl. The bertrandite crystals are in dissolved spaces of single crystals of beryl.

Recovered from a beryl-columbite subtype rare-element pegmatite subjected to low-temperature hydrotheramal alteration in S-type (Ilumenite-series) granite.

Other localities

  • Yamano-o (Pegmatite, Granular)
  • Mount Gyojya (Pegmatite, Granular)
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