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.
Black and brown crystals found in gypsum and anhydrite at this locality are authigenic quartz crystals colored by inclusions. They are not smoky quartz.
Monte Rosso, Castelnovo ne' Monti, Reggio Emilia Province, Emilia-Romagna, Italy