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Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard or sidewalk chalk, and drywall. Alabaster, a fine-grained white or lightly tinted variety of gypsum, has been used for sculpture by many cultures including Ancient Egypt, Mesopotamia, Ancient Rome, the Byzantine Empire, and the Nottingham alabasters of Medieval England. Gypsum also crystallizes as translucent crystals of selenite. It forms as an evaporite mineral and as a hydration product of anhydrite.
Mortar is a workable paste which hardens to bind building blocks such as stones, bricks, and concrete masonry units, to fill and seal the irregular gaps between them, spread the weight of them evenly, and sometimes to add decorative colors or patterns to masonry walls. In its broadest sense, mortar includes pitch, asphalt, and soft mud or clay, as those used between mud bricks, as well as cement mortar. The word "mortar" comes from Old French mortier, "builder's mortar, plaster; bowl for mixing." (13c.).
Empire is an unincorporated community and census-designated place (CDP) in Washoe County, Nevada, with a population estimated at 65 (2021). It is part of the Reno–Sparks Metropolitan Statistical Area; before the 2010 census, it was part of the Gerlach–Empire census-designated place. The nearest town, Nixon, is 60 miles (97 km) to the south on a reservation owned by the Pyramid Lake Paiute Tribe.
The Eagle River is a tributary of the Colorado River, approximately 60.5 miles (97.4 km) long, in west central Colorado in the United States.
Selenite, satin spar, desert rose, gypsum flower are crystal habit varieties of the mineral gypsum.
Thevenard is a port town in the far west of Eyre Peninsula, South Australia. It is contiguous with the larger town of Ceduna. Its name derives from nearby Cape Thevenard, which in turn was named after Antoine-Jean-Marie Thévenard, a French admiral. In the 2021 census, Thevenard had a population of 563.
The Khewra Salt Mine is in Khewra, north of Pind Dadan Khan, an administrative subdivision of Jhelum District, Punjab Region, Pakistan. The mine is in the Salt Range, Potohar plateau, which rises from the Indo-Gangetic Plain, and is the second largest in the world.
Arden, Nevada was an unincorporated community in Clark County, Nevada. The area is now part of the town of Enterprise. Located about 7 miles (11 km) southwest of Las Vegas, the area is experiencing rapid growth in housing development on land formerly owned by the Bureau of Land Management.
Gypsum is an unincorporated community in eastern Portage Township, Ottawa County, Ohio, United States. It has a post office with the ZIP code 43433.
Midland is a ghost town in Riverside County in the southeastern part of the U.S. state of California. It is adjacent to the Little Maria Mountains and located about 20 mi (32 km) northwest of Blythe. It is accessible from Blythe in the south via Lovekin Boulevard and Midland Road, and from Rice in the north via Midland Road.
Himalayan salt is rock salt (halite) mined from the Punjab region of Pakistan. The salt, which often has a pinkish tint due to trace minerals, is primarily used as a food additive to replace refined table salt but is also used for cooking and food presentation, decorative lamps and spa treatments. The product is often promoted with unsupported claims that it has health benefits.
The Selenite Range is a mountain range in western Pershing County, Nevada. The range is a north–south trending feature approximately 27 miles (43 km) long and 4 miles (6.4 km) wide.
National Gypsum Company is a company based in Charlotte, North Carolina, that produces drywall gypsum boards in the US. It has 17 gypsum board plants in the US and presents itself as a fully integrated building products manufacturer. It is a private company, incorporated as New NGC, Inc. in 1993. It is one of the six producers which hold approximately 81% of the worldwide wallboard market
The Domtar Mine, formed from the consolidation of Grand Rapids Gypsum Company mines 1 & 2, is an inactive underground gypsum mine in Walker, a suburb of Grand Rapids, Michigan.
The Rakhi-Munh mine is one of the largest gypsum mines in Pakistan. The mine is in Punjab. The mine has reserves amounting to 27 million tonnes of gypsum.
The Khewra mine is one of the largest gypsum mines in Pakistan. The mine is located in Punjab. The mine has reserves amounting to 25 million tonnes of gypsum.
The Mawand mine is one of the largest gypsum mines in Pakistan. The mine is located in Punjab. The mine has reserves amounting to 20 million tonnes of gypsum.
The Dera Ismail Khan mine is one of the largest gypsum mines in Pakistan. The mine is located in Khyber Pakhtunkhwa. The mine has reserves amounting to 90 million tonnes of gypsum.
The Kohat mine is one of the largest gypsum mines in Pakistan. The mine is located in Khyber Pakhtunkhwa. The mine has reserves amounting to 4.91 billion tonnes of gypsum.
References
- 1 2 3 "Mineral deposits of Pakistan" (PDF). pakboi.gov.pk. 2012. Archived from the original (PDF) on 2014-03-27. Retrieved 2013-07-23.
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