About Anhydrite
An anhydrous calcium sulfate (CaSO4), found in evaporite deposits and hydrothermal veins. It promotes acceptance and emotional release, helping to embrace the present. Angelite is its commonly known blue variety.
Primary Hues
Colorless, White, Bluish, Violet, Grey, Pinkish, Reddish
Geological & Scientific Details
Anhydrite is classified as a sulfate mineral mineral which typically crystallizes in the orthorhombic system. Its chemical formula is CaSO4. Common crystal habits include rare tabular and prismatic crystals. usually occurs as fibrous, parallel veins that break off into cleavage fragments. also occurs as grainy, massive, or nodular masses.
Key Geological Properties:
- Mineral Category: Sulfate mineral
- Chemical Formula: CaSO4
- IMA Symbol: Anh[1]
- Crystal System: Orthorhombic
- Predominant Geological Color: Colorless to pale blue or violet if transparent; white, mauve, rose, pale brown or gray from included impurities
- Crystal Habit: Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments. Also occurs as grainy, massive, or nodular masses
- Twinning: Simple or repeatedly on {011} common; contact twins rare on {120}
- Cleavage: [010] perfect [100] perfect [001] good, resulting in pseudocubic fragments
- Luster: Pearly on {010} vitreous to greasy on {001} vitreous on {100}
- Streak: White
- Diaphaneity: Transparent to translucent