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!
As solid masses and as small indistinct tabular crystals with pyromorphite from the northern trial. Other trial workings, now mostly obliterated, were made for baryte in Short Grain.