Prehnite finger cast after Anhydrite

Prehnite finger cast after AnhydriteA pair of classic finger shaped casts of Prehnite after Anhydrite with good luster on the display side, and a slight coating of a secondary clay mineral on the back. The gemminess and color make it a worthwhile toenail sized specimen of this well contemporary classic material. The underside of the piece shows the square cross section of the once preexisting Anhydrite crystals that were the base for the cast. The Prospect Park Quarry is arguably the

A true Colorado classic from the San Juan Mountains

the Quartz has an underlying pink hue that is caused by an unknown mineral (possibly Rhodochrosite

cubic crystals (with dodecahedral modifications on the edges) measuring up to 3

If you collect Apatites

almost organic appearance of the twins is really unique and pleasing to the eye

the likes of which may never be matched from any mine in Bolivia

fairly thick blade of Ferberite is surrounded by several smaller blades and one little “closed” twin of equal quality

where the crystals rarely exceeded 6 mm in length

No damage to the front / display side

very sharp (not rounded or water worn)

The Brookites are a bit thicker than most crystals this size

This specimen features several excellent