lacroixite
noun
la·croix·ite
ləˈkrwäˌzīt
plural -s
: a mineral approximately Na(Ca,Mn)AlPO4(OH)3 that consists of a basic phosphate of aluminum, calcium, manganese, and sodium often containing fluorine and that occurs in pale yellowish green crystals (hardness 4.1)
Word History
Etymology
French, from F. A. Alfred Lacroix †1948 French mineralogist + French -ite