3173 Cuproroméite, Comanche Mine, California, USA

‘Cuproroméite’ from the Comanche Mine, Blind Spring Mining District, Benton Range, California, USA. Originally named partzite. Partzite discredited in IMA proposal: 16-B. Found to be a very fined grained mixture of a plumboroméite-like oxide phase and a chrysocolla-like amorphous Cu silicate. 45x30x22mm.