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!
Worlds finest locality for the Brucite, hosting the largest crystal ever found (to 0.2m). Crystals from here are rich and well developed, in numerous modifications including large tabular crystals and occasional groups in rosettes. coloration from this locale tends towards pale green coloration in the richest specimens.
Habit:
tabular plates with pseudo-hexagonal edging. usually foliaed masses
Colour:
white to pale green, pearly to waxy luster, transparent in thin sections/plates
Luminescent properties:
bright blue-white response
Quality for species:
Excellent - world class for species or very significant. (!!)
Wood's Chrome Mine, Texas, Little Britain Township, Lancaster County, Pennsylvania, USA