Prehnite finger cast after AnhydriteA small miniature sized specimen of Prehnite after Anhydrite comprising finger shaped casts and balls with decent luster, gemminess and color. The piece has a light coating of a secondary clay mineral but does display well from several angles. A nice representative piece from this famous discovery. The Prospect Park Quarry is arguably the most famous mineral producing basalt quarry in New Jersey and, for over a century, has provided collectors with

It’s rather uncommon to find crystallized Goethite ON Smoky Quartz like this from any world locality

but it’s more than forgivable considering that virtually every Ferberite from Tasna has some kind of imperfection

Stephano Ph

This particular piece features a few top quality

gemmy colorless Quartz crystals on matrix

This specimen features dozens of exceptionally rare

Alpine Apatites are not terribly common and are certainly one of the more desirable species for Alpine mineral collectors

BEAUTIFULLY twinned crystal that I would classify as being a "near floater" as it's crystallized nearly all the way around

and this one would make a great addition to any Colorado collection

I'm told from our source that the material also has small inclusions of sulfur

Specimen # BOL711B300

Pyrrhotite is well known from this mine