Prehnite finger cast after Anhydrite metamorphic with only a few contacts

with only a few contacts here and there

To the credit of Alfredo Petrov and Dr

but one of them was instead the new mineral

Specimen # BOL711B63

wonderful display specimens and excellent associations

Prehnite finger cast after Anhydrite metamorphic with only a few contactsA classic, single finger shaped cast 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 crystal that was 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