Mineral (Silicate -- Sheet -- Mica) Not metallic -- 1 flexible cleavage plane (sheet), ... Gypsum CaSO 4 2H 2 O Very soft, crystalline Rock Gypsum ... (see below for naming information) Porphyritic texture is a subcategory of Aphanitic (see below for naming information) ...

For example, gypsum has been used in the manufacture of assembled cabochons designed to imitate rainbow moonstones. Enhancements. Gypsum can take dyes and coatings very easily. Sources. The most common sulfate mineral, gypsum has many sources all over the world. It occurs especially in evaporite environments.

Gypsum is a mineral that is naturally found concentrated in various places and can be mined out of the ground. But Dick's research focuses on gypsum recovered from coal-fired electricity generating power plants. Gypsum that comes from coal plants is called flue-gas desulfurization gypsum, as it comes from the process that 'scrubs' sulfur ...

Gypsum Statistics and Information. Gypsum, one of the most widely used minerals in the world, literally surrounds us every day. Most gypsum in the United States is used to make wallboard for homes, offices, and commercial buildings; a typical new American home contains more than 7 metric tons of gypsum alone. Moreover, gypsum is used worldwide ...

U.S. Geological Survey, Mineral Commodity Summaries, January 2020 GYPSUM Demand for gypsum depends principally on construction industry activity, particularly in the United States, where the majority of gypsum consumed is used for building plasters, the manufacture of …

General Gypsum Information : Chemical Formula: CaSO4•2(H2O) Composition: Molecular Weight = 172.17 gm Calcium 23.28 % Ca 32.57 % CaO: Hydrogen 2.34 % H 20.93 % H 2 O: Sulfur 18.62 % S 46.50 % SO 3: Oxygen 55.76 % O: 100.00 % 100.00 % = TOTAL OXIDE

A not-for-profit trade association founded in 1930, promoting the use of gypsum while advancing the development, growth, and general welfare of the gypsum industry in the United States and Canada on behalf of its member companies

Information on the mineral gypsum. What gypsum is and some of its uses, properties, and value.Further information can be found at: https://rockandmineralpla...

Copper is a metal used in coins, electronics, pipes, wiring, motors, alloys and many other products. Uses of Talc. Talc is a soft mineral used in cosmetics, paper, paint, ceramics and many other products. Magnesite. Magnesite is a carbonate mineral used for chemicals, fire …

variety of gypsum is called satin spar . Anhydrite (CaSO 4) is a calcium sulphate mineral found associated with gypsum commonly as a massive or fibrous mineral. Gypsum that occurs in nature is called mineral gypsum. In addition to mineral gypsum, seawater and some chemical and fertilizer plants are sources of by-product marine gypsum and by-product

Photos of Minerals Geology Home Page Roger Weller, geology instructor . [email protected] gypsum- selenite crystal . Gypsum last edited: 1/30/18 number of photos: 82 Gypsum is CaSO 4.H 2 O Mineral information on gypsum Gypsum comes from the Greek word for gypsum, gypsos. photos

Mineral Name: Gypsum Chemical Composition: CaSO4.2H2O, hydrous calcium sulfate Color: Gray, white, brown, clear Streak: White Hardness: 2 Cleavage/Fracture: Gypsum's cleavage is complex, there is only good cleavage in one direction and fair in two others that create thin, rhombic fragments. Crystal Form: Gypsum appears mostly as a four sided crystal, otherwise known as tabular crystal.

For more detailed information on Amethyst you can click over to my article "All About Amethyst" Gypsum. Gypsum is quite a special mineral and can at times look like glass. This mineral takes on a few different forms and I would venture to say that a couple of those forms can make some think of glass.

Click on a Mineral name to learn more about it! Fluorite Gypsum Sodalite Magnetite Copper Quartz Mica Pyrite Calcite Labradorite Fluorite Fluorite is really interesting! When you find it in a rock, all the little crystals will usually be in the shape of cubes. This is the way that the mineral naturally grows! Fluorite is a soft rock which can be scratched with a common nail

Gypsum — Oklahoma. Origin: Great Salt Plains, Jet, Alfalfa Co., Oklahoma, USA Number: (3931229) Size: 10.5 x 8.0 x 6.0 cm (cabinet)

Gypsum, common sulfate mineral of great commercial importance, composed of hydrated calcium sulfate (CaSO 4 ·2H2O)(Calcium Sulfate Dihydrate ).In well-developed crystals the mineral commonly has been called selenite. The fibrous massive variety has a silky lustre and is called satin spar; it is translucent and opalescent and is valued for ornaments and jewelry.

Gypsum Sulfate CaSO 4 •2H 2 O The necessary information for identifying these minerals is presented in two often-used formats on the following pages. First, the minerals are tabulated by property. Second, they are arranged into flowcharts. Examine both while working with the specimens, as either one may be

Gypsum is a mineral comprised of calcium sulfate dihydrate. Gypsum is considered an evaporate and forms when evaporation of water allows oxygen to bond with the surrounding sulfur to create sulfate. The sulfate will then bond with surrounding calcium and water to create the final product gypsum. Crystal System: Elongated prismatic crystals.

Mineral Resource of the Month: Gypsum. by U.S. Geological Survey . Thursday, June 14, 2018. Robert D. Crangle Jr., mineral commodity specialist for the U.S. Geological Survey, compiled the following information on gypsum, an essential commodity for …

Gypsum is a sedimentary rock and a crystalline mineral. "Gypsum is a soft, white to gray, "chalky" mineral composed of calcium sulfate and water," says Raymond Anderson of Iowa's Department of Natural Resources. Gypsum's chemical symbol is CaSO4•2H2O.

Gypsum occurs in extensive beds formed by the evaporation of ocean brine. It also occurs as an alteration product of sulfides in ore deposits and as volcanic deposits. Name: From the Greek name for the mineral, but more especially for the calcined mineral. Association: Halite, celestine, calcite, aragonite, anhydrite, dolomite, sulfur.

07.CD.40 Gypsum CaSO4•2(H2O) A2/a 2/m : Other Gypsum Information: See Also: Links to other databases for Gypsum : 1 - Alkali-Nuts(English) 2 - Am. Min. Crystal Structure Database 3 - Amethyst Galleries' Mineral Gallery 4 - Athena 5 - Franklin Minerals(Dunn) 6 - Franklin Minerals(Palache) 7 - GeoScienceWorld 8 - Glendale Community College 9 ...

The History of Gypsum Because water will return Gypsum to its Original Rock Form, Gypsum Has Earned Its Reputation as the "Wonder Mineral" in Construction. The Egyptians knew about it, and used it in the Pyramids. It's also found in toothpaste; helps make peanuts grow; is found in the walls of your home; and makes many sets for movies.

Gypsum is an industrially important mineral. It is the primary ingredient of plaster-of-Paris, which is finely ground Gypsum, and it is used in the production of cement. It is also the main component of sheet rock. It is used as a flux for creating earthenware, and can be used as a fertilizer.

Gypsum. Gypsum, a calcium sulfate hydrate mineral, was first reported on one specimen each from Franklin and Sterling Hill by Palache (1928a, 1935). Frondel (1972) reported that it had subsequently been found in abundance. Local gypsum is largely unstudied. Colorless clear cleavage plates and crystals over 10 cm are known to occur at Sterling ...

Minerals Information Center, 988 National Center, Reston, VA 20192. KEY PUBLICATIONS . Minerals Yearbook—These annual publications review the mineral industries of the United States and of more than 180 other countries. They contain statistical data on minerals and materials and include information on economic and

Interactive guide to hundreds of rocks and minerals. Some important minerals are not here yet. We are constantly working on expanding this list.

Anhydrite is not a common mineral, as it easily alters to the much more common mineral Gypsum from the addition of water into its chemical structure.Anhydrite and Gypsum are chemically similar, except Gypsum has the addition of water. In fact, the name of Anhydrite is derived from "An" and "Hydra" - meaning "without water" - in reference to its similarity to Gypsum but the fact that it lacks ...

Gypsum from Morenci mine, Greenlee Co., Arizona, United States. Long, slender crystals of Gypsum, variety selenite to over 1cm and are waterclear. Click thumbnail images for larger view.

Gypsum is stated to be the most common natural fibrous mineral found indoors (20:1 gypsum fibers to asbestos) mainly because of its use in plaster in buildings. In a German study of fibrous dusts from installed mineral wool products in living rooms and workrooms, 134 measurements revealed an average air pollution of 3184 gypsum fibers/m3.

What is Gypsum? Gypsum is an evaporite mineral most commonly found in layered sedimentary deposits in association with halite, anhydrite, sulfur, calcite, and dolomite.Gypsum (CaSO 4. 2H 2 O) is very similar to Anhydrite (CaSO 4).The chemical difference is that gypsum contains two waters and anhydrite is without water.

gypsum rock. Rock composed primarily of the mineral Gypsum, but also contain impurities such as Calcite, Anhydrite, Halite, Dolomite, Limonite, and clay. < Back.

Gypsum Mineral Information photos and Facts, plaster manufacturing. . Gypsum Mineral Facts: Chemical Formula: CaSO4.2H2 O (Various forms including Alabaster, Satin Spar, Selenite) Colors: White and colorless when pure. Impurities may render it shades of gray, red, yellow, blue or …

Gypsum Supergroup. Name: First known mention is by Theophrastus about 300-325 BCE from the Greek γυψοζ (gypsos) meaning plaster. Isostructural with: Ardealite, Brushite, Pharmacolite. The most common sulphate mineral. Found as both massive …