Learn about Anhydrite
water-free CaSO4 crystals with orthorhombic cleavage, blue to lilac hues; prized for sharp forms, angelite color, and rare, unaltered specimens.Anhydrite from Naica Mine, Mexico
from Naica Mine, Mexico — pale blue prismatic blades in sprays with silky striations; a classic display mineral that boosted collector appeal.Naica Mine
A collector's guide to Naica Mine, Mexico: its geology, mining history and notable minerals, illustrated with the 52 specimens documented from this locality on EarthWonders.
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