Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
No analysis written or collector reference has been found to substantiate the occurrence of chalcanthite from this mine. Possibly blue-green sulphates where thought to be this species.