Recent finds at the famous Prospect Park quarry: Prospect Park, Passaic County, New Jersey.

Rocks & Minerals | July 1, 2005| | Copyright

The Prospect Park quarry has been producing fine mineral specimens for more than a century. In terms of quality minerals it is possibly the most significant trap-rock quarry in the world. Not many localities can boast fine native silver, chalcocite crystals to 3.75 cm, red stilbite "bow-ties" to 14 cm, endless morphologies of calcite, barite crystals to 14 cm, some of the world's finest prehnite, and arguably the finest known examples of chabazite, gmelinite, and thomsonite. Fortunately, one of us (JZ) has been able to work with the present owners, Tilcon New Jersey, Inc., in ...

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