ləˈkrwäˌzīt noun
( -s )
Etymology: French, from F. A. Alfred Lacroix died 1948 French mineralogist + French -ite
: a mineral approximately Na(Ca,Mn)AlPO 4 (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)