Cavansite, Stilbite, Calcite

Unknown Owner

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This unusual specimen exhibits three generations of mineral, staring with a matrix of tan, drusy, stilbite, upon which grew a cluster of royal blue, cavansite measuring 1.5 cm in length. Encrusting the cavansite is a generation of colorless, gemmy, calcite crystals, to .2 cm across. This latter encrustation gives the underlying cavansite a strange, candy coating, effect.