leucochalcite
noun
leu·co·chal·cite
ˌlükōˈkalˌsīt
plural -s
: a mineral Cu2(AsO4)(OH).H2O(?) consisting of a basic arsenate of copper crystallizing in the form of white silky needles
Word History
Etymology
obsolete German leucochalcit (now leukochalcit), from German leuc- + chalc- + -it -ite