arapahite

noun
arap·​a·​hite | \ əˈrapəˌhīt\
plural -s

Definition of arapahite

: a basic basalt rock containing bytownite, augite, over 50 percent of magnetite, and abundant apatite

History and Etymology for arapahite

Arapaho + English -ite; from its discovery on land owned by Arapahos

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