"From the collection of A. Lincoln Sherk M.D. (1890's-1969). Plate of translucent green prehnite in botryoidal crystal aggregates. The surface of the specimen is covered with crystal faces (distinct crystals of prehnite is uncommon). Very clean, no damage. Prehnite was named after its discoverer; Colonel Hendrik von Prehn and is an attractive collection mineral that is occassionally used for ornamental stone purposes. Its color is usually a pleasant green and is at times quite unique to prehnite. Typical prehnite forms rather thick crusts with a rough or crystaline texture." Location: New Street Quarry, Paterson, Passaic County, New Jersey
Size: 5 x 3 x 1.3 cm.
Weight: 0.2 lbs.
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