Mineral(s): Prehnite Location: Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA Size: 6.5 x 5.0 x 2.4 cm Description: This specimen consists of beautiful, pale apple-green coloured spheres of prehnite sitting atop a thin ‘layer’ of prehnite and with botryoidal prehnite (white) on the reverse side. The largest Prehnite "sphere" measures 1.1 cm across. This is a classic prehnite specimen from a long-closed classic location and is in very good condition. This former trap rock-aggregates deposit/quarry was opened in 1901 and it was sold to Warren Brothers in 1969. In the early 1980s, Tilcon New Jersey, Inc., purchased the quarry. Mineralization has been found in the interior of basalt pillows, in junction pockets between pillows, in veins, and within cavities of the amygdaloid. The quarry pit is currently being filled in for a future housing development.
