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anhydrite |
Also found in: Dictionary/thesaurus, Acronyms, Wikipedia, Hutchinson | 0.20 sec. |
anhydriteRock-forming mineral, anhydrous calcium sulfate (CaSO4), which differs chemically from gypsum (to which it changes in humid conditions) by having no water of crystallization. Anhydrite occurs most often with salt deposits in association with gypsum, as in the cap rock of the Texas-Louisiana salt domes. Anhydrite is one of the major minerals in evaporite deposits; it is also present in dolomites and limestones, and in ore veins. It is used in plasters and cement as a drying agent. |
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| For example, extensive anhydrite replacement of dolostones, with or without concomitant anhydrite cementation, is well known from the Devonian strata of western Canada (e. The sabkha deposits consist primarily of fine-grained red beds that are locally interbedded with limestone, anhydrite and salt. Veins of anhydrite and minor amounts of barite have also been observed. |
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