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2. Calcium sulfate - Wikipedia

   en.wikipedia.org/wiki/Calcium_sulfate

   Calcium sulfate (or calcium sulphate) is the inorganic compound with the formula CaSO 4 and related hydrates. In the form of γ- anhydrite (the anhydrous form), it is used as a desiccant . One particular hydrate is better known as plaster of Paris , and another occurs naturally as the mineral gypsum .

3. Gypsum - Wikipedia

   en.wikipedia.org/wiki/Gypsum

   Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4 ·2H 2 O. [4] It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, drywall and blackboard or sidewalk chalk.

4. Phosphogypsum - Wikipedia

   en.wikipedia.org/wiki/Phosphogypsum

   Phosphogypsum (PG) is the calcium sulfate hydrate formed as a by-product of the production of fertilizer, particularly phosphoric acid, from phosphate rock. It is mainly composed of gypsum (CaSO 4 ·2H 2 O).

5. Selenite (mineral) - Wikipedia

   en.wikipedia.org/wiki/Selenite_(mineral)

   Selenite, satin spar, desert rose, and gypsum flower are crystal habit varieties of the mineral gypsum.. All varieties of gypsum, including selenite and alabaster, are composed of calcium sulfate dihydrate (meaning that it has two molecules of water), with the chemical formula CaSO 4 ·2H 2 O. Selenite contains no significant selenium – The similar names both derive from Greek selḗnē ...

6. Concrete degradation - Wikipedia

   en.wikipedia.org/wiki/Concrete_degradation

   Sulfates and sulfites are ubiquitous in the natural environment and are present from many sources, including gypsum (calcium sulfate) often present as an additive in 'blended' cements which include fly ash and other sources of sulfate. With the notable exception of barium sulfate, most sulfates are slightly to highly soluble in water.

7. 8 of the best sources of calcium that aren't dairy - AOL

   www.aol.com/lifestyle/8-best-sources-calcium...

   From citrus to figs to fish, find out which foods you should be adding to your diet to get more calcium.

8. Calcium - Wikipedia

   en.wikipedia.org/wiki/Calcium

   Calcium hydroxide, Ca(OH) 2, is a strong base, though not as strong as the hydroxides of strontium, barium or the alkali metals. [17] All four dihalides of calcium are known. [18] Calcium carbonate (CaCO 3) and calcium sulfate (CaSO 4) are particularly abundant minerals. [19]

9. Could milk, other calcium-rich foods help lower colorectal ...

   www.aol.com/could-milk-other-calcium-rich...

   Upping daily calcium intake may lower colorectal cancer risk by 17% For this study, researchers analyzed dietary data from more than 542,000 women who participated in the Million Women Study .