roscherite
noun
roscher·ite
ˈräshəˌrīt,
ˈrōsh-
plural -s
: a mineral (Ca,Mn,Fe)2Al(PO4)2(OH).2H2O consisting of a hydrous basic phosphate of aluminum, manganese, calcium, and iron and occurring in dark brown monoclinic crystals
Word History
Etymology
German roscherit, from Walter Roscher, 20th century German mineral collector) + German -it -ite
First Known Use
1915, in the meaning defined above