オホーツク石

オホーツク石（オホーツクせき、 Okhotskite）は、1987年に発表された日本産新鉱物で、北海道大学の鉱床学者戸苅賢二と赤坂正秀により、北海道の国力鉱山で発見された[1]。産出地に近いオホーツク海の名称から命名された。

化学組成はCa2Mn2+Mn3+2(Si2O7)(SiO4)(OH)2・H2O[2]で、単斜晶系。硬度6、比重3.40。パンペリー石のグループに属する。色は赤褐色で、多色性が強いため偏光顕微鏡下では色が大きく変化する。

発見者の戸苅は、オホーツク石発見の功績により櫻井賞（第30号メダル）を受賞した。

脚注

  1. ^ Togari, K. and Akasaka, M. (1987): Okhotskite, a new mineral, a manganese ion3+-dominant member of the pumpellyite group, from the Kokuriki mine, Hokkaido, Japan. Mineral. Mag., 51, 611-614.
  2. ^ Miyawaki R., Hatert F., Pasero M., Mills S.J. (2019) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 50. New minerals and nomenclature modifications approved in 2019.

関連項目

外部リンク

スタブアイコン

この項目は、鉱物に関連した書きかけの項目です。この項目を加筆・訂正などしてくださる協力者を求めています（プロジェクト:鉱物/Portal:地球科学/Portal:鉱物・宝石）。

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