bermanite
noun
ber·man·ite
ˈbər-mə-ˌnīt
plural -s
: a mineral (Mn,Mg)5(Mn,Fe)8(PO4)8(OH)10.15H2O(?) consisting of a reddish brown basic hydrous phosphate of manganese, iron, and magnesium
Word History
Etymology
Harry Berman †1944 American mineralogist + English -ite