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 known diversity, quality and quantity of this species soared after its recognition at the Foote Mine, which remains - although not the type locality - the word's premier locality for fairfieldite.
Habit:
Diverse - tabular, prismatic, spheroids, equant, flowers (bladed hemispheres)
Foote Lithium Co. Mine, Kings Mountain, Cleveland County, North Carolina, USA