Plaster of… It is found in layers that were formed under salt water millions of years ago. This page shows answers to the clue Gypsum, followed by ten definitions like “Calcium sulfate dihydrate”, “Used to make Plaster of Paris” and “Hydreous calcium sulphate”.A synonym for Gypsum is cast. The United States is the world’s leading consumer of wallboard at over 30 billion square feet per year. Michigan is the number one producer of the yellowish sulfate mineral, gypsum, in the United States. Register here. Though gypsum deposits can be found in several countries, its largest producers are, the United States, France, Italy, Canada, Australia, and Great Britain. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. 2H 2 O) crusts are found in many of the world’s deserts where monthly potential evaporation exceeds mean monthly precipitation throughout the year ( Watson, 1985 ). When water evaporated, it left the mineral behind. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Gypsum. Gypsum can be found as thick layers in shale and as attractive crystals. Gypsum is a white mineral, CaSO 4.2H 2 O (hydrous calcium sulfate), used in the manufacture of cements and plasters, especially plaster of Paris (to control the rate of setting of Portland cement), and also in some fertilizers.See calcium.. Gypsum is found in both mineral and rock form. In these cases the ammonium nitrate is bagged in plastic bags before being lowered into the blast hole. In Move Mining Next Gen, students from grades K-12 create and submit short, 3-minute videos to answer the question, “Why is mining important in our lives?”  There are prizes for a grades K-5 category ($250), a grades 6-8 category ($250) and a grades 9-12 category ($250), as well as an overall winner ($1,000). Since it forms easily from saline water, gypsum can have many inclusions of … It is processed and used as prefabricated wallboard or as industrial or building plaster, used in cement manufacture, agriculture and other uses. There is an additional prize ($500) for the video that receives the most votes online—the People’s Choice winner. The largest gypsum crystal was found in the Braden mine in Chile and exceeds 3 metres (about 10 feet) in length and 0.4 metre (about 1.5 feet) in diameter. When gypsum is heated and the water within the mineral is evaporated out, gypsum turns into a chalk or plaster, known as plaster of Paris. In all, more than 90 countries produce gypsum. The result is the accumulation of large beds of sedimentary gypsum. Gypsum is mainly found in eastern St. Andrew in the Port Royal Mountains. The majority of our gypsum is mined north of the Gypsum exit on Interstate 70. Gypsum is mined from sedimentary rock formations around the world. Most of the world’s gypsum is produced by surface-mining operations. It takes the form of crystals which can at times be found projecting from rock – leading to its old English name of the Spear Stone. As seawater evaporates, gypsum is the first ‘salt’ to be precipitated, followed by anhydrite, halite, and finally sylvite. https://www.britannica.com/science/gypsum. It is normally mixed 1 part gypsum and 20 parts cement. It forms in lagoons where ocean waters high in calcium and sulfate content can slowly evaporate and be regularly replenished with new sources of water. This makes it excellent for use as chalk. The MEC Virtual Booth has the new MEC Careers in Mining video and more! Gypsum (CaSO 4. Due to its inherent fire resistance, gypsum board, commonly known as drywall is the premier building material for wall, ceiling, and partition systems in residential, institutional, and commercial structures. 2H2O. When salty seawater evaporates, dissolved salts, including the mineral gypsum, are left behind. Massive gypsum rock forms within layers of sedimentary rock, typically found in thick beds or layers. It forms in lagoons where ocean waters high in calcium and sulfate content can slowly evaporate and be regularly replenished with new sources of water. As a mineral, it can form attractive, and sometimes extremely large, crystals. The states producing the most gypsum are Oklahoma, Iowa, Nevada, Texas, and California. Such crystals are found in a clay beds as floater crystal s, where they fully form without being attached to a matrix. The popularity of gypsum as a building material grew from the mid-1880s as methods of controlling setting time were developed. It occurs as clumps of crystals or in thick beds. Gypsum. It is a very soft mineral and it can form very pretty, and sometimes extremely large colored crystals. Gypsum formation did not stop in prehistoric times. Usually found with other evaporite and carbonate minerals, such as anhydrite, calcite, dolomite, borax, and halite, in altered carbonate rocks, gypsum may also be found with sulfur and pyrite. Gypsum is a common mineral. We found 3 answers for “Gypsum” . In the United States, gypsum is mined in about 19 states. The most significant use for gypsum is for wallboard and plaster products. Synonyms of Gypsum Hide In southern Tunisia and the central Namib Desert, gypsum crusts are found around ephemeral lakes. What rocks contain gypsum? Gypsum beds were formed in shallow sea basins. Gypsum can form anywhere where the right combination of mineral elements occurs and evaporation happens. Known since ancient times, plaster of paris is so called because of its preparation from the abundant gypsum found near Paris. When water evaporated, it left the mineral behind. The identity of those remains has not been released. It contains six rooms and is measured at 320 feet long by 120 feet wide. It is also found in huge quantities 20-50cm below the surface as a form of ‘varved’ or banded gypsum. The largest gypsum quarries in Europe are found in France, Germany, Italy, Poland, Spain, and the UK. If conditions are right, large quantities of gypsum build up into thick beds of sedimentary rock. Gypsum deposits were formed millions of years ago when salt water oceans covered most of the earth, and as they receded, may inland "dead" seas were formed which, as It is mainly extracted through quarrying and is used in cement production. Home Mining & Minerals Information Minerals Database. Gypsum is commonly as… Gypsum is commonly associated with rock salt and sulfur deposits. Go to www.MoveMiningNextGen.org to learn how to make and submit your video! Gypsum is also found as a by-product of scrubbing sulfur from fossil fuels. Gypsum Gypsum is a soft sulfate mineral, composed of calcium sulfate dihydrate. Plaster of paris, quick-setting gypsum plaster consisting of a fine white powder (calcium sulfate hemihydrate), which hardens when moistened and allowed to dry. Most of the gypsum produced in … Commercial quantities of gypsum are found in the cities of Araripina and Graja£, Brazil, Pakistan, Jamaica, Iran (world's second largest producer), Thailand, Spain (the main producer in Europe), Germany, Italy, England, Ireland, in British Columbia, Manitoba, Ontario, Nova Scotia and Newfoundland in Canada, and in New York, Michigan, Indiana, Texas (in the Palo Duro Canyon), Iowa, Kansas, Oklahoma, Arizona, New Mexico, Colorado, Utah, Arkansas and Nevada in the United States. Gypsum is commonly associated with rock salt and sulfur deposits. It is a major rock forming mineral that produces massive beds, usually from precipitation out of highly saline waters. It is found in layers that were formed under salt water millions of years ago. Gypsum is mined from sedimentary rock formations around the world. Gypsum is a mineral found in crystal as well as masses called gypsum rock. … Gypsum is a common mineral. 2H 2 O) is very similar to Anhydrite (CaSO 4). As it still holding up thousands of years later, gypsum proves to be a durable building material. GYPSUM, Colo. (CBS4) – Human remains were found at the site of a home explosion in Gypsum. Over 30 million tons of gypsum is consumed in the United States annually. Sometimes the drill holes become wet, which can cause problems with the ammonium nitrate. It is a very soft mineral and it can form very pretty, and sometimes extremely large colored crystals. The chemical difference is that gypsum contains two waters and anhydrite is without water. The cave was first documented by Mark Raymond Harrington in a 1930 edition of Scientific American. Nova Scotia gypsum was shipped to the eastern US in the 1780s for use as land plaster. In the United States, gypsum mainly occurs in New York, Virginia, Ohio, Michigan, Texas, Nevada, and California. Gypsum plant, Marshall County. Together, these states account for about two-thirds of the United States’ annual production of gypsum. to eight feet in thickness, and are often inter-layered with limestone or shale. The SciFest All Access virtual science festival will offer engaging STEM activities and performances extended through October 31, 2020, that celebrate the excitement of STEM for K-12 students, college students, educators, and families. In most open pit gypsum operations, benches are drilled and blasted using ammonium nitrate as the explosive. 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