Dolomite, Chalcopyrite & Pyrite on Sphalerite (rare combo) Madrid Coll.

Item Description

A very showy and RARE combination from the famous mines at Guanajuato. Dolomite is very uncommon, but here we have sharp, lustrous, faint pink rhombs, to 2.2 cm, with accenting, brassy chalcopyrite crystals and pyritohedrons richly and aesthetically covering the very rare sulfide matrix of sphalerite galena. Excellent and rare material from the Madrid Collection. Faint pink dolomite fluorescence.