Prehnite finger cast after Anhydrite fossil intergrown spherical aggregates (comprised of

intergrown spherical aggregates (comprised of dozens of triangular bladed crystals) of Childrenite

This piece was collected in the late 1970s – early 1980s and remained in a private collection for decades

the most significant sulfide in the mine is Tetrahedrite

This piece is a great

The finest Tsumeb Dioptase specimens are simply breathtaking

Prehnite finger cast after Anhydrite fossil intergrown spherical aggregates (comprised ofA good miniature specimen with nice luster, gemminess and color. The reverse and underside of the specimen shows the hollow, striated cavities where the once preexisting Anhydrite once grew. The piece displays well without the aid of a base or clay. Despite a slight coating of a secondary clay mineral, this piece is still a worthwhile specimen of this now famous material. The Prospect Park Quarry is arguably the most famous mineral producing basalt