Dolomite and Pyrrhotite on Quartz
Morro Velho Gold Mine, Nova Lima, Minas Gerais, Brazil
Cabinet, 9.4 x 5.5 x 5.1 cm
Ex. Dr. Ed David
Dolomite crystals of this quality are rare from any location, and these translucent blades are heavily decorated by minute crystals of iridescent pyrrhotite (and some cubanite) to make them stand out. A very 3-dimensional specimen, overall! Bladed rosettes of lustrous, translucent dolomite to 4.5 cm across, are aesthetically emplaced on a colorless, gemmy, 7.0 cm across, quartz crystal. Usually one sees gemmy green siderite with minor dolomite but this is a superb PRIMARILY-dolomite specimen from one of the world