Mineral: Prehnite epimorphic on Anhydrite with Laumontite
Locality: Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
Dimensions: 27.5 x 19.8 x 14.2 cm

Description: A 15.5 cm prehnite epimorph after anhydrite on globular prehnite with laumonite that was formerly in the U.S. National Museum.

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