Aragonite Var. Zeiringite – Oberzeiring, Styria, Austria

 Zeiringite is a blue variety of the mineral aragonite, which occurs as a sinter formation near copper deposits. Microscopic inclusions of aurichalcite color the aragonite in various shades of blue and cause a silky sheen (unusual for aragonite), which is clearly visible in this specimen.
 Rare display piece from the type locality!