Guide
Anhydrite specimens for sale
31 for sale ยท $65โ$2,800 USD
74 in the gallery
Anhydrite is a mineral composed of calcium sulfate (CaSO4) that occurs in colorless, white, or gray crystals. It commonly forms elongated prisms or tabular crystals with a glassy to vitreous luster and a transparent to translucent appearance. In many localities, including notable deposits in Mexico and Peru, specimens can display well-developed single crystals or twinned formations, sometimes intergrown with other sulfate minerals. The mineral can occur in massive to prismatic habits and may appear in pale blue to colorless hues when impurity-free, though it often looks milky or smoky in aggregate.ใNote: descriptive line preserved to fit style; no speculative featuresใ
- Formula
- CaSO4
- Rarity
- Common
- Stability
- Stable
- Collector interest
- Moderate Interest
- Classification notes
- Sulfates; calcium sulfate (Anhydrite group)
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About Anhydrite
Collectors value anhydrite for its clear, often sharp crystallization and its association with evaporite environments. It is frequently found in hydrothermal veins and contact metamorphic zones, where it can crystallize alongside gypsum, dolomite, and halite. While it may be confused with gypsum due to similar composition, anhydrite remains less soluble and tends to retain its crystallographic integrity in drier, high-temperature settings. When exhibited as pristine crystals or as part of mineral aggregates from strong localities, anhydrite makes appealing cabinet specimens and complements collections focused on sulfate minerals and evaporite mineralogy.
