indonesia mineral eand port ban does it affect aggregate

Bauxite in Malaysia: The environmental cost of mining ...- indonesia mineral eand port ban does it affect aggregate ,As Malaysia puts a temporary ban on the controversial practice of bauxite mining, the BBC's Jonathan Head visits a mining area. ... Not a mineral itself, it is a rock comprised mostly of aluminium ...Gypsum - WikipediaGypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4 ·2H 2 O. It is widely mined and is used as a fertilizer, and as the main constituent in many forms of plaster, blackboard chalk and wallboard.