gypsum rock halifax

  • Nova Scotian Mineral Localities - Windsor Gypsum Mines

    This quarry was more recently known as Fundy Gypsum or the Canadian Gypsum Company operation. In earlier times it was called the Wentworth Quarry. It is a couple kilometers east of Windsor in the community of Wentworth. A gypsum mine at Wentworth, .

  • How to Dispose of Sheetrock | Hunker

    The original drywall, Sheetrock consists of 90 percent gypsum and 10 percent paper. Gypsum is a naturally occurring mineral known as hydrous calcium sulfate, which is a mixture of calcium sulfate and water. The gypsum used to make drywall is mined from ancient seabeds, where it collected over eons.

  • Gypsum - Wikipedia

    Gypsum 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/sidewalk chalk, and drywall.