Talk:Calcium sulfate

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From gypsum

A growing source of gypsum is from Flue gas desulfurization which scrubs the sulfur emissions from fossil fuel burning power stations. This is done by using finely ground limestone which reacts with the sulfur dioxide to produce high purity gypsum as a by-product. This is now the main source for calcium sulfate. Schould this be mentioned here? Stone 16:49, 2 February 2006 (UTC)

[edit] Density error?

This density (~22g/cm^3), about that of Ir, seems to me to be in error. Drywall doesn't strike me as that heavy. Should this be verified? --Oreo Priest 03:10, 10 August 2006 (UTC)