Natrolite, Prehnite
Toenail, 3.0 x 4.3 x 3.5 cm
Upper New Street Quarry (Burger's Quarry), Paterson, Passaic Co., New Jersey, USA
This particular specimen consists of a beautiful, "snow"-white nest of thin micro fibers of Natrolite (possibly mixed with Mesolite needles) sitting atop gemmy, "water"-green color Prehnite casts after Anhydrite. Natrolite for all intents and purposes is a relatively rare Zeolite species, and to find it on wonderfully contrasting matrix is a real treat.