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!
Cooper & Stanley (1990): "Small tapering colourless crystals with beudantite and carminite from a vein exposure in the dry gully to the east [NY32403385] have been shown by IR (University of Manchester Institute of Science and Technology (UMIST)) to be almost phosphate-free."
Habit:
massive; tabular to prismatic rarely above 5mm long
Colour:
grey to pale green; greyish brown; yellow; colourless
Brandy Gill Mine, Mungrisdale, Eden, Cumbria, England, UK