Prehnite finger cast after Anhydrite cyclic twin that’s right

that’s right

The vast majority of the Zinkenite specimens from this find were certainly not this attractive and so richly grouped together

To the best of my knowledge

not the more likely Park or Teller County locality that one might expect from Colorado

Then a second deposit of Native Copper arrived

Prehnite finger cast after Anhydrite cyclic twin that’s rightA 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 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 most famous mineral producing basalt quarry in New Jersey and, for over a century, has provided collectors with