Noun
A mineral consisting of the hydrous sulphate of lime (calcium). When calcined, it forms plaster of Paris. Selenite is a transparent, crystalline variety; alabaster, a fine, white, massive variety.
Source: Webster's dictionaryAcids in the rain react with the calcium compounds in the stones to create gypsum, which then flakes off. Source: Internet
Alabaster or mineral gypsum is a soft mineral that is easy to carve for smaller works and still relatively durable. Source: Internet
Although traditionally composed of natural chalk, modern blackboard chalk is generally made from the mineral gypsum ( calcium sulfate ), often supplied in sticks of compressed powder about 10 cm (4 in) long. Source: Internet
Another method specified by Chinese texts—the earliest dating to 1110—specified the use of saponin (from the beans of Gleditschia sinensis) to extract hormones, but gypsum (containing calcium sulfate ) was also known to have been used. Source: Internet
Because gypsum dissolves over time in water, gypsum is rarely found in the form of sand. Source: Internet
A scam has been unearthed at Dangote Cement in Masaiti district where supply of raw materials especially gypsum is being quoted in dollars. Source: Internet