Cuprian Melanterite and Gypsum var. Selenite

Item Description

Interesting and attractive combination specimen from Arizona. The majority of the specimen is composed of microcrystalline Cuprian Melanterite, turquoise blue in color. Melanterite is a hydrated iron sulphate, formed after the decomposition of Pyrite or other iron minerals due to the action of surface waters. It is often found in mines as a post-mining formation on mine walls. On the Melanterite is a forest of dozens upon dozens 3-4 mm white curvaceous Selenite fishtail twins. Nice aesthetics, and really, looks like something out of Dr. Suess.