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

Japanese page


Mount Myoken

Kozuma village, Hitachi-Ota city, Ibaraki pref., Japan

This locality is closed to collecting.




Field of view: 20 mm. Crystals of trilithionite. The platy pink crystals are trilithionite. The massive white part at the bottom is albite.

Recovered from a spodumene subtype rare-element pegmatite in S-type (Ilmenite-series) granite. Formed in the Late Cretaceous (100 Ma).

Trilithionite from this location was described as lepidolite in 1973.

Other localities

  • Mount Myoken (LCT pegmatite, Platy)
  • Nagatare (LCT pegmatite, Platy)
Copyright (c) 2017 NariNari, All Rights Reserved.