Desert Rose - Tunisia-2
Thursday, November 3, 2005 8:07:30 AM
In Tunisia you can buy really nice pieces for less than one Euro or Dollar (or 1 Dinar for that matter). To find them yourself usually need some digging, and knowledge of where to dig.Gypsum is by the way a hydrous calcium sulphite – CaSO4.2H2O. It can be crushed into a white powder and be used in building materials like plaster and sheetrock. Plaster has been used in the Mediterranean region for at least 9000 years – I mean as a building material – I once had my arm in plaster, but that is another story, and of a more recent date.
"Pure" calcium sulphate, CaSO4, is called anhydrite, and gypsum is formed by hydration of anhydrate.
Ole









Dannydannyjr # Thursday, November 3, 2005 11:19:39 PM
Alex Bryantalexbryant69 # Tuesday, January 4, 2011 9:18:39 AM
Ole Nielsennielsol # Tuesday, January 4, 2011 9:36:08 AM