Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
Small crystals of chalcopyrite up to 5 mm in size have been found, associated with dolomite crystals. Some crystals have a superficial coating of chalcocite. Small masses up to 2 cm across are sometimes found scattered through massive dolomite.
Azcárate Quarry, Eugui, Esteríbar, Navarre, Spain