Prehnite after Anhydrite with Calcite

specimen number:
2063093

location:
Upper New Street Quarry, Paterson, New Jersey

description:
Neat specimen showing large casts of green crystallized prehnite after now gone prismatic terminated crystals of anhydrite. Scattered throughout richly are sparkling white scalenohedral crystals of calcite. In good condition all around. The specimen comes with a previous label from the collection of Ray DeMark. This label notes that the specimen was originally collected around the year 1950.

The Upper New Street Quarry in Paterson, New Jersey, is situated within Mesozoic basalt formations created by massive lava flows during the breakup of Pangaea. Commercial stone extraction and subsequent digging exposed numerous mineral-rich pockets and vugs within the trap rock, making the site world-famous among collectors for yielding exceptional specimens of green prehnite, various zeolites, calcite, and rare species. Although active industrial mining operations have long since ceased and parts of the area are built over, the location remains legendary in mineralogical history for its diverse and sculptural crystal assemblages.

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