January 2022 – Adular

This beautiful mineral is adular, collected from the Rhone Glacier in Switzerland. It is found on a metamorphic rock called gneiss. Adular is often found in alpine crevasses. At this piece, the adular has grown with quartz.  Adular is a variety of orthoclase, which is a feldspar. Feldspars belong to one of the most common minerals in our earth crust. Adular is our mineral of the month January.

K[AlSi₃O₈]

Locality: Rhone glacier, Wallis, Switzerland

Size: 7x16x12 cm (HxLxW)

Weight: 1350 g

Foto: Fabio Joseph, Mineralogical State Collection Munich