Quartz Cast (ex Brian Kosnar Collection)

Item Description

These specimens have been labeled as being Quartz after Barite pseudomorphs, but given the fact that Barite is chemically inert and nearly impossible to dissolve, it is most likely that these pseudomorphs are Quartz replacing Anhydrite. With that said, this specimen is a textbook pseudomorph showing the perfect orthorhombic, thin bladed form of the previous crystal which was replaced by very small, almost "sugary" white Quartz crystals. A wonderful specimen from a district that produced some of the most classic pseudomorphs from all of Colorado. From the Colorado collection of Brian Kosnar. A great example of this hard to find material.