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!
Calcite at the Parwan Lava Cave occurs as white botryoidal coating to stalactitic growths on the ceiling and walls of the cave. The calcite stalactites occur up to 50mm long.
Parwan lava caves, Parwan, Moorabool Shire, Victoria, Australia