The laboratory tests later confirmed that the overlayer is largely composed of hydratedcalciumsulphate(gypsum).
From theCambridge English Corpus
Calciumsulphate, phosphogypsum and calcium carbonate in the amelioration of acid subsoils for growth.
From theCambridge English Corpus
Ascalciumsulphatehas a relatively high solubility, repeated cycles of water condensation and evaporation could cause localized redistribution of the mineral by dissolution and reprecipitation.
From theCambridge English Corpus
What are we to do with all of thecalciumsulphatethat cannot be used on the market?
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Further, there are some important issues regarding the disposal of fly ash and, if limestone is used, ofcalciumsulphate, which has no market.
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It will involve millions of tons of fresh limestone feedstock and necessitatecalciumsulphatewaste-disposal management.
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It is an interlocking reinforced, high densitycalciumsulphate(gypsum) board.
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When sea water evaporates, high concentration and precipitation of calcium carbonate andcalciumsulphate result, leading to a hypersaline sodium chloride-rich brine.
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Insolublecalciumsulphateprecipitates out of solution, then the aluminum nitrate nonahydrate may be purified by crystallization.
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This is a transformation of the mineral anhydrite (anhydrouscalciumsulphate) into gypsum (hydrouscalciumsulphate).
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The chalk used on blackboards today is usually made of gypsum orcalciumsulphate, a powder pressed into sticks.
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He received two patents, one for a process for the separation of magnesium chloride from calcium chloride and a second for a method of making ammonium chloride andcalciumsulphate.
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The floor panels, consisting ofcalciumsulphate, feature unique dimensions of 500 x 500 mm and are applied with a special scratch-resistant covering made of galvanised steel sheets.
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The result was stagnating pools of evaporating seawater; the salts of these, mixed with other organic matter and mineral deposits, crystallised into thecalciumsulphatecomposition that is gypsum.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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