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!
Small (ca. 1 mm) clear and opaque white crystals of baryte occur in cavities in limonite stained quartz and in one case enclosing a supergene copper mineral. Some of the baryte crystals resemble one form of anglesite with which they may be easily confused at first sight.