Anhydrite
a mineral, anhydrous calcium sulfate, CaSO 4 , usually occurring in whitish or slightly colored masses.
Historical Examples
anhydrite (CaSO4) also occurs in rock masses, and is often associated with rock salt.
A Textbook of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer and John Jacob Beringer
These observations appear to show that the change to anhydrite is a very gradual process at temperatures below a red heat.
Scientific American Supplement, No. 794, March 21, 1891 Various
anhydrite, anhydrous sulphate of calcium, a mineral presenting several varieties of structure and colour.
The New Gresham Encyclopedia. Vol. 1 Part 2 Various
Conversely gypsum may, under certain conditions, be dehydrated or reduced to anhydrite.
Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 Various
noun
a colourless or greyish-white mineral, found in sedimentary rocks. It is used in the manufacture of cement, fertilizers, and chemicals. Composition: anhydrous calcium sulphate. Formula: CaSO4. Crystal structure: orthorhombic
Read Also:
- Anhydro-
a combining form representing anhydride, in compound words: anhydroglucose. anhydro- pref. Without water: anhydride.
- Anhydrosis
the deficiency or absence of perspiration; adiaphoresis. noun (pathol) the absence of sweating anhidrosis an·hi·dro·sis (ān’hī-drō’sĭs) n. Absence of sweating. Also called adiaphoresis, ischidrosis.
- Anhydrous
with all water removed, especially water of crystallization. Historical Examples Above this temperature the anhydrous salt is the stable solid phase. The Phase Rule and Its Applications Alexander Findlay When perfectly pure and anhydrous, it forms a white and highly crystalline mass, rapidly decomposed by air and moisture. Cooley’s Cyclopdia of Practical Receipts and Collateral […]
- Ani
any of several black, tropical American cuckoos of the genus Crotophaga, having a compressed, bladelike bill. Contemporary Examples ani Amir Amreeka fi Sinjar,” said their father proudly, laughing, which translates as, “I am the prince of America in Sinjar. Obama Went to War to Save Them, But They Can’t Get U.S. Visas Christine van den […]
- Aniakchak crater
an active volcanic crater on the Alaskan Peninsula, with a diameter of 6 miles (10 km).