Ulexite from Boron, California, USA, width 43 mm, Chigakusha collection, 2023

Ulexite from Boron, California, USA, width 43 mm, Chigakusha collection, 2023 by Katsuaki Watanabe

曹灰硼石／ウレックス石（アメリカ産、標本の横幅43 mm、地学舎所蔵）

Member of #borates ホウ酸塩

Mindat.org: Ulexite

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