Gypsum: A Versatile Mineral. Gypsum, scientifically known as Calcium Sulfate Dihydrate (CaSO 4 ·2H 2 O), is a naturally occurring mineral primarily formed from the evaporation of ancient bodies of sea water and lakes. It is a soft, transparent to translucent crystal that is typically white or colorless but can take on other hues when ...
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3 Mineral Properties. KEY CONCEPTS. Mineral names derive from mineral appearance, composition, provenance, and many other things. ... appearing as a solid mass with no distinguishing features: granular: …
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Learn how gypsum, hemihydrate and anhydrite react with water and change their crystal structure and solubility. See thermal analysis, dilatometry and …
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Gypsum is a sulfate mineral with the chemical formula CaSO4·2H2O. It is used for wallboard, plaster, cement, agriculture and other applications. Learn how gypsum is mined, processed and formed in sedimentary rock.
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Gypsum occurs in two main varieties as white earthy masses or as clear crystals. In crystal form, its softness and single perfect cleavage with two less well-developed cleavage directions usually serve to distinguish gypsum from other similar-looking minerals. Anhydrite: When gypsum loses its water component, it forms the mineral anhydrite …
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Cleavage planes in gypsum crystals are a defining feature of the mineral's structure. Gypsum exhibits perfect cleavage along its planes, allowing it to easily split into thin sheets or plates. This unique characteristic is a result of the crystal's internal atomic arrangement, which enables it to break cleanly and smoothly along these planes.
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Pure gypsum is hydrous calcium sulphate (CaSO 4.2H 2 O). It is a soft mineral, white when pure, but of varying shades of grey, yellow, red or brown if impure. The main use for Victorian gypsum is for agricultural soil conditioning, although demand for this fluctuates in response to the rural economy and climatic conditions.
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Anhydrite (CaSO 4) and gypsum (CaSO 4 ·2H 2 O) are the two most abundant minerals of ancient marine evaporite deposits and are also common in non-marine evaporite deposits. Sedimentary gypsum forms by direct precipitation out of evaporating seawater under arid climatic conditions in hydrologically restricted marine …
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These lab specimens show both distinctive features of gypsum: softness (note the white scratches from many finger nails) and one nice cleavage plane (parallel to ground). Clear crystals or crystal fragments of gypsum are called selenite. These are four more cleavage fragments of selenite. The good cleavage is again parallel to the ground surface.
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Gypsum Crystal, unknown Locality. University of Waterloo Earth Sciences Museum Collection. Gypsum can be found as thick layers in shale and as attractive crystals. Rock Gypsum - soft, granular, white to gray, with 30-40% impurities ; Selenite - pure crystalline gypsum found in transparent monoclinic crystals ; Alabaster - white, compact, fine …
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Calcite is a carbonate mineral known for its rhombohedral cleavage and reaction with dilute hydrochloric acid, while gypsum is a sulfate mineral, softer, with a hardness of 2 and used in plaster. ... a diagnostic feature not seen with gypsum. This reaction is a handy field test for geologists. Whereas gypsum, when mixed with water, …
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Gypsum Mineral Description. Gypsum is a hydrated calcium sulfate with composition CaSO 4 ·2H 2 O. It commonly occurs as a chalky powder or occasionally as small crystals. In gypsum, the structure is layered, parallel to the b direction. ... Click on the buttons below to highlight specific features. Calcium (Ca) atoms Sulfate groups Single …
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Gypsum soils are special substrates where gypsum mineral content is greater than 40 % (in dry weight), which impacts soil physicochemical properties (Herrero and Porta 2000). ... were the soil ...
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Gypsum is a very common mineral; only a select few of the best and most classic are mentioned here. The finest European localities are Lubin, Poland; Kapnick, Maramures Co., Romania; and the Sulfur mines of Agrigento Province, Sicily, Italy. Desert Roses and Sand Gypsum come from several places in the Sahara Desert in Algeria and Morocco. …
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Exploring the physical properties provides valuable insights into gypsum's versatility and applications. By appreciating its hardness, cleavage tendencies, color variations, …
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Gypsum is the mineral that includes in its structure Sulfate ion, which makes it a sulfate mineral, and of all the sulfate minerals, Gypsum is the most common. Gypsum is composed of hydrated calcium sulfate, and its chemical formula is CaSO 4 .2H 2 O.
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It occurs in both mineral form (selenite) and as a rock in bedded layers. Gypsum occurs interbedded with salt (halite, NaCl) and anhydrite (CaSO 4). Gypsum is used in drywall, Portland cement, plaster, bakery products, and as a filler in pill form medications. Ohio has not produced any gypsum from mining since 2004.
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Gypsum Mineral. This evaporite mineral is the core ingredient, constituting 60% to 90% of the board's weight on average. Gypsum is a soft white mineral in appearance and hydrated calcium sulfate (CaSO4·2H2O) in chemical composition. ... The versatility and ease of use of the gypsum board are the features that further increase …
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Gypsum is a versatile mineral with hundreds of uses for thousands of years. The earliest use of gypsum plaster dates to about 8000 BCE with the discovery of its use in Anatolia (Turkey). Gypsum plaster was used as early as 7000 BCE as a construction material in Egypt. Gypsum was first discovered and utilized in North America in Nova Scotia ...
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Learn about gypsum, a mineral with the formula CaSO4 ·2H2O, and its diverse uses in construction, agriculture, and industry. Discover its geology, environmental and health …
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Figure 1: a: Gypsum crystals produced from sodium sulphate and calcium chloride; b: Natural gypsum cut along black lines; c: Gypsum crystals from a, with directions from Figure 2 marked with arrows, on side from Figure 3 marked with yellow, on cleavage plane with red; d: Crystal from a) along c-axis marked in black.
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Gypsum Mineral Description. Gypsum is a hydrated calcium sulfate with composition CaSO 4 ·2H 2 O. It commonly occurs as a chalky powder or occasionally as small crystals. In gypsum, the structure is layered, parallel to the b direction. ... Click on the buttons below to highlight specific features. Calcium (Ca) atoms Sulfate groups Single unit ...
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Gypsum. Gypsum is a mineral that forms in the dry areas of the cave. It is a calcium sulfate mineral that is soluble in water. It is most commonly seen as delicate white crystal found along tour routes such as Cleveland Avenue and Kentucky Avenue. Along Broadway in historic section of Mammoth Cave you can also see gypsum, but it is …
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Gypsum is a soft non-metallic mineral that forms in sedimentary settings, as seawater evaporates or as dissolved ions precipitate from groundwater. Learn about its chemical …
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Gypsum has the following properties: Mohs Scale Hardness: 1.5 – 2 Specific Gravity: 2.31 – 2.33 Gypsum Streak: White Fracture: Conchoidal, splintery (parallel) Gypsum Luster: vitreous, silky, pearly, waxy Crystal System: Elongated prismatic crystals.Flat Gypsum Chemical Formula: CaSO 4 ·2H 2 O
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One notable example is the Shuanghe Cave in Guizhou Province, which features intricate gypsum formations including stalactites, stalagmites, and gypsum flowers. Almeria, Spain: Southeastern Spain boasts numerous gypsum caves, some adorned with beautiful mineral formations and speleothems (cave decorations) composed of gypsum.
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Natural gypsum, shown in Fig. 25.1, is the most common raw material for production of binders.It is a soft mineral, attributed to sedimentary rocks, normally grey or with no colour, with a humidity of about 8–10%. Gypseous stone, a denser modification of gypsum that is composed of gypsum and sandy and clayey stone, is normally used to …
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Geology and Properties of the Calcium Sulfate Minerals Properties of Gypsum Physical properties. Gypsum (CaSO 4 · 2H 2 O) has a specific gravity of 2.32 and hardness of 2. It is commonly colorless, white, or gray. Shades of yellow, red, and brown result from impurities. Crystals, when present, are generally of tabular or prismatic habit …
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Part of the southwestern United States, including what is now southern New Mexico, was covered by a shallow sea, known as the Permian Sea. Over millions of years, rising and falling sea levels left behind thick layers of mineral gypsum and other dissolved minerals on the seafloor.
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Some people even include gypsum into their fertilizers. This mineral is popular with collectors, but it is not often used in jewelry due to its softness. Physical Properties and Structure. The chemical formula for gypsum is CaSO 4.2H 2 O (calcium sulfate dihydrate). Gypsum forms typical monoclinic crystals.
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