08-19-2014, 10:50 AM
Sedimentary Gypsum
Gypsum are sedimentary rocks made up of sulphate mineral and formed as the result of evaporating sea water in massive prehistoric basins. It is very soft and is used to make Plaster of Paris, casts, molds, and wallboards.
![[Image: gypsum.jpg]](http://www.frontdesk.co.in/big/gypsum.jpg)
Gypsum are sedimentary rocks made up of sulphate mineral and formed as the result of evaporating sea water in massive prehistoric basins. It is very soft and is used to make Plaster of Paris, casts, molds, and wallboards.