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!
Occurred sparingly at station 12 as well-developed crystals up to 15 mm long in divergent groups in a feldspatic pegmatite cutting the garnet rock. Also occurs in a microscopically-banded pattern intergrown with thulite from above stations 8 and 10.