richellite
noun
ri·chell·ite
rə̇ˈsheˌlīt
plural -s
: a mineral Ca3Fe10(PO4)8(OH,F)12.nH2O(?) consisting of a basic hydrous fluophosphate of iron and calcium in yellow masses
Word History
Etymology
French richellite, from Richelle, near Visé, Liége province, Belgium + French -ite