Anhydrite
a mineral, anhydrous calcium sulfate, caso 4 , usually occurring in whitish or slightly colored m-sses.
historical examples
anhydrite (caso4) also occurs in rock m-sses, and is often -ssociated with rock salt.
a textbook of -ssaying: 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
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