This trap-rock locality is one of the most impressive zeolite localities in the world. This quarry has produced some amazing specimens in the last 100 years. One of the unique aspects of Prospect Park is the fact that the basalt didn't form in "pillow lavas" like those at the New Street Quarry. This particular specimen is an attractive piece consisting of beautiful, lustrous apple green color spheres of Prehnite sitting atop a layer of gemmy, colorless Calcite rhombohedra on basalt. The largest Prehnite "sphere" measures 1.5 cm across. A very attractive specimen of this classic material. It must be noted that Prospect Park will never produce these specimens again in a very short period of time. The quarry is currently being backfilled to make room for housing developments. Ex. Brian Kosnar Collection.