Rock gypsum
Rock made of gypsum
Common
A rock made mostly of gypsum, laid down in beds with anhydrite when sea or lake water evaporates, early in the sequence before the salts.
Rock
- Kind of rock
- Chemical sedimentary rock
- Rock family
- Salt beds
- Also contains
- Anhydrite
- Deposits
- Evaporite deposit
- Shapes the land into
- Salt Flat
- How it forms
- Precipitates from evaporating sea water once calcium sulfate is saturated, before halite.
Identity
- Also known as
- Gypsum rock
Crystallography
- Habits
- Massive, Granular
Physical properties
- Luster
- Dull, Pearly
- Colors
- white, gray, pink
- Transparency
- Opaque
Geology
- Origins
- Sedimentary
- Geography
- worldwide
Classification
- Rarity
- Common
- Gem quality
- No
Sources
- Evaporite. Wikipedia.
- C. R. Hallsworth, R. W. O’B. Knox, BGS Rock Classification Scheme, Volume 3: Classification of sediments and sedimentary rocks (Research Report RR 99-03). British Geological Survey, 1999.
Browse the Crystal Encyclopedia — MGS Toolbox