kutnahorite
noun
kut·na·ho·rite
ˌkətnəˈhōrˌīt,
ˌku̇t-
plural -s
: a mineral Ca(Mn,Mg,Fe)CO3 that consists of a carbonate of calcium, manganese, magnesium, and iron and that is isomorphous with either dolomite or calcite
Word History
Etymology
German kutnahorit, from Kutná Hora, western Czechoslovakia, its locality + German -it -ite