Prehnite Valentinite The largest sphere of Kowlezite

The largest sphere of Kowlezite measures 4 mm across

The underside of the piece shows the square cross-section of the once preexisting Anhydrite crystal that was the base for the cast

whitish yellow colored radiating “balls” with rarely seen golden bladed Pyrrhotite

Specimen # BOL711B231

Prehnite Valentinite The largest sphere of KowleziteOne of the most unusual Prehnites I have seen from any locality. At first glance, one might think that these are "casts" or epimorphs after another species, as Prehnite has been known to do, but upon close inspection you can see that these are completely solid inside and are basically Prehnite stalactites or non epimorphic "fingers". Some of these "fingers" are broken and show a radial growth pattern in the center. Really strange for the species. I