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!
White to sea-green and lime-green, acicular, radiating crystals of wavellite to a maximum of 25mm. Variscite as rare pale green spheres to 1mm and micro cacoxinite and crandallite all confirmed by XRD at the NMW and represent the first Welsh occurrences o
Pwll Du Head, Pennard, Swansea, Wales, UK