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!
Frequency could be not given for all this location while the new discvery touch a little part (2 meters long and 1.5m deep) of this 400m deep vein reconnized at 18th century!
Only one 19mm on edge crystal was found and twinned crystals are rare (only 12 founded).
St Pierre vein, Lepuix, Belfort, Territoire-de-Belfort, Bourgogne-Franche-Comté, France