Prehnite finger cast after AnhydriteA good sized, lustrous, nice green color, gemmy, isolated Prehnite finger after Anhydrite is shooting out of the center of this miniature sized specimen. The finger is complete all the way around and has a very slight coating of a secondary clay mineral. An attractive display specimen with the classic form that made the pieces from this discovery famous. The Prospect Park Quarry is arguably the most famous mineral producing basalt quarry in New Jersey

Opal is known from hundreds of world localities

twinned Adularia from any locality

Some of the crystals show slight octahedral modifications on the corners

brassy-gold colored twinned crystals of Chalcopyrite coated by micro epitaxial cubic Galena(

The surface of the specimen has a slight overgrowth of attractive green Malachite

and some are even doubly terminated as you rotate the piece in your hand

These are very well-formed crystals and are only very slightly skeletal or hoppered

If you've ever wanted to get your hands on a good Linarite from the Grand Reef Mine

A full-sized thumbnail of Amazonite with good medium blue-green color

prismatic crystals of Vivianite which are associated with beautifully contrasting golden Childrenite aggregates

giving it a two-tone appearance

From the famous replacement ore body in the Camp Bird Mine