Arcanite

Arcanite Crystal on yellow matrix

Arcanite is a potassium sulfate mineral. It was first described in 1845 when it occurred with old pine railroad ties in a tin mine in Trabuco Canyon in the Santa Ana Mountains in Orange county, California.

Lab grown. 

Water Soluble.

Low toxicity recorded (LD_{50 6400mg/kg in rats.)}

Size ~ 2 inches

Each crystal is unique & varies in appearance.