1) Beautiful stone 2) Calcium mineral 3) Cut mineral 4) Decorative stone 5) Gemstone 6) Gemstone mineral 7) Jewel 8) Jewel mineral 9) Luminescent mineral 10) Mineral gemstone 11) Mineral jewel 12) Polished mineral 13) Polished jewel 14) Prized mineral 15) Precious stone 16) Precious gemstone 17) Prized stone
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https://www.crosswordclues.com/clue/anhydrite
==Occurrence== Anhydrite is most frequently found in evaporite deposits with gypsum; it was, for instance, first discovered, in 1794, in a salt mine near Hall in Tirol. In this occurrence, depth is critical since nearer the surface anhydrite has been altered to gypsum by absorption of circulating ground water. From an aqueous solution calcium sulf...
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http://en.wikipedia.org/wiki/Anhydrite
• (n.) A mineral of a white or a slightly bluish color, usually massive. It is anhydrous sulphate of lime, and differs from gypsum in not containing water (whence the name).
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http://thinkexist.com/dictionary/meaning/anhydrite/
an important rock-forming mineral, anhydrous calcium sulfate (CaSO4). It differs chemically from gypsum (to which it alters in humid conditions) by ... [6 related articles]
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http://www.britannica.com/eb/a-z/a/76
A specific calcined gypsum rock whose chemical composition is anhydrous calcium sulfate (CaSO4). It is used in Portland Cement to control set.
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http://www.encyclo.co.uk/local/22192
An·hy'drite noun [ See
Anhydrous .]
(Min.) A mineral of a white or a slightly bluish color, usually massive. It is anhydrous sulphate of lime, and differs from gypsum in not containing water (whence the name).
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http://www.encyclo.co.uk/webster/A/84
Anhydrite is a mineral consisting of sulphate of lime. It has rectangular cleavage fragments and occurs in a manner similar to gypsum and often found with it but not as common. It is found in the cap rock of salt domes and in limestone rocks. The name comes from the Greek meaning 'without water' . It has the formulae CaSO4 and a relative hardness o...
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Calcium sulfate
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http://www.translationdirectory.com/glossaries/glossary075.htm
a mineral, anhydrous calcium sulfate, CaSO, usually occurring in whitish or slightly colored masses.
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https://www.infoplease.com/dictionary/anhydrite
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