Home > Copper Minerals II – September 8 > MS1119 Cyanochroite

Cyanochroite - Sold

Cyanochroite is a hydrated potassium copper sulfate, and a member of the picromerite group. The mineral is water soluble. Guarini et al. (1855) originally named this mineral cianocroma, but Dana and Brush (1868) renamed the mineral cyanochroite in the Fifth edition of Dana's System of Mineralogy. The mineral name denotes the cyan color. There are four loose crystals, gemmy and somewhat rounded, to 6 mm in a plastic box.

This item was part of the personal collection of Ralph Merrill, proprietor of the prolific mail order business Minerals Unlimited. The specimen also carries a J.B. Nichols label, a collection Merrill purchased in 1953. Merrill's collection card and label also ship with the specimen.