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!
The typematerial of the now discredited faratshite was found in a roadcut about 10 km from Faratsiho on the road to Sambaina. It was found in an altered volcanique rock (basalt or trachyte)as an elliptical mass of 2 x 1 meter