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Kutnohorite is a rare calcium manganese carbonate mineral with magnesium and iron, that is a member of the dolomite group. It forms a series with dolomite, and with ankerite. The end member formula is CaMn2+(CO3)2,〔http://rruff.info/ima〕 but Mg2+ and Fe2+ commonly substitute for Mn2+, with the Mn content varying from 38% to 84%,〔 so the formula Ca(Mn2+,Mg,Fe2+)(CO3)2 better represents the species. It was named by Professor Bukowsky in 1901 after the type locality of Kutná Hora, Bohemia, in the Czech Republic.〔Frondel, Clifford and Bauer, L H (1955), Kutnahorite, a manganese dolomite, CaMn(CO3)2. American Mineralogist 40: 748〕 It was originally spelt “kutnahorite” but “kutnohorite” is the current IMA-approved spelling. == Dolomite group == *Dolomite, CaMg(CO3)2 *Ankerite, CaFe2+(CO3)2 *Kutnohorite, CaMn2+(CO3)2 *Minrecordite, CaZn(CO3)2 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「kutnohorite」の詳細全文を読む スポンサード リンク
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