smore the merrier

By: Matthew Sylvia

gypsum

  • Chemistry: CaSO4-2(H2O), Hydrated Calcium Sulfate
    • Class: sulfates
      • Uses: plaster, wall board, some cements, fertilizer, paint filler, ornamental stone, etc..
      • Gypsum is one of the more common minerals in sedimentary environments. It is a major rock forming mineral that produces massive beds, usually from precipitation out of highly saline waters. Since it forms easily from saline water, gypsum can have many inclusions of other minerals and even trapped bubbles of air and water.

cool facts about gypsum

The word gypsum is derived from the Greek word gypsos which means chalk or plaster.

There is a large sand dune in New Mexico made of gypsum sand.

Benjamin Franklin introduced the mining of gypsum to the US.

Some of the largest gypsum crystals ever found were in Mexico and weighed 55 tons.

uses for gypsum

manufacture of wallboard, cement, plaster of Paris, soil conditioning, a hardening retarder in Portland cement. Varieties of gypsum known as "satin spar" and "alabaster" are used for a variety of ornamental purposes, however their low hardness limits their durability.