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!
Orange xls to 1mm (XRD), on green pyromorphite. At the Esgar Fraith mine wulfenite is also found on the quartz vein stone. Most if not all of the wulfenite has been collected from the dumps of Shaft Isaf, and from the western end of Esgair Fraith mine.
Habit:
Bipyramiddle, and tabular
Colour:
Orange-brown
Quality for species:
Poor for species, only of interest for locality collectors. (#)
Esgair Hir & Esgair Fraith mines, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK