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.
"Arsenopyrite, with pyrite, is one of the major ore minerals within the dyke belt. It occurs in pyramidal crystals sometimes exhibiting a slight helicoid torsion. Crystals may reach 1.5 cm across. The crystal habits include elongated crystals forming divergent groups, or star-like aggregates. Cruciform twins have also been recorded."