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One of the better association specimens of Hemimorphite from the Sherman Mine that we’ve ever seen
Specimen #PREH31118
the subscript "N" is to imply its structure is network-like
jet-black to golden / “root beer” colored crystal group with an unusual crystallization for the locality
The quality is good for this locality
Prehnite finger cast after Anhydrite Epidote One of the better associationA classic, thick, single finger shaped cast of Prehnite after Anhydrite with good gemminess and luster on the display side, and a slight coating of a secondary clay mineral on the back. The side of the piece has a second spherical aggregate that was contact upon extraction from the pocket. 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
