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!
Garnet occurs as porphyroblasts in the kyanite-eclogite. The garnet shows compositional growth zoning with increasing MgO and CaO and decreasing FeO and MnO from the core to the rim.