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lustrous black Sphalerite crystals and additional Chalcopyrites which are sprinkled throughout
At the Tucson Show in 2020
The base of the specimen shows some minor associated Smoky Quartz
luster and color
There is a bit of sub-surface iron inclusions
Prehnite finger cast after Anhydrite blue lustrous black Sphalerite crystals andA 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
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