adularia

Etymology
Named for the type locality at Adular, Switzerland.

Noun

 * 1)   A variety of orthoclase feldspar found as colorless to white prismatic crystals in cavities in metamorphic rocks. Some specimens reflect a bluish sheen along crystal faces. This phenomenon is called adularescence, and adularia with this property is called moonstone. (See sanidine).

Translations

 * Finnish: adulaari
 * German:
 * Polish:
 * Portuguese: adulária
 * Spanish:

Etymology
From Adular, a Swiss locality.