Siderite on Quartz (ex Brian Kosnar Collection)

Item Description

A very hard to find specimen of this highly desirable and famous material featuring golden "rosettes" of Siderite which are nearly completely overgrowing prismatic, colorless, gemmy Quartz crystals. For a final touch, the Siderites are dusted with small sparkling Pyrite crystals. If you're a Bolivian mineral collector, or if you collect carbonates, do not miss out on this beautiful display specimen of this well-known but very scarce material. From Brian Kosnar's personal collection, and according to Brian, the best one in this size that he's handled.