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!
Pale yellow to colorless tabular TN crystal with sphalerite inclusions. Apatite may have been the primary mineral from which the vivianite and phosphophyllite formed, but crystals are rare and generally overlooked.
Morococala Mine, Santa Fé mining district, Pantaleón Dalence Province, Oruro, Bolivia