The myth of gypsum magic adding gypsum to your yard or. Gypsum mineral of many uses rocks and minerals 4 u. Displace magnesium on soil particles making it nontoxic and preventing dispersion. The mean value and ranges for natural gypsum is 15 170. The scientific name for raw gypsum is anhydrous calcium sulphate. Mineral planning factsheet gypsum continuous miner, barrowuponsoar mine, leicestershire.
Gypsum is one of the more common minerals in sedimentary environments. In fact, the word gypsum comes from the greek word for plaster. A wide variety of gypsum mineral options are available to you, there are 546 suppliers who sells gypsum mineral on, mainly located in asia. Gypsum is much softer than minerals of similar color, such as calcite or quartz, and is the only one that can be scratched with a fingernail. It is the chief ingredient in drywall, which is used in the construction of homes and. The chemical difference is that gypsum contains two waters and anhydrite is without water. Gypsum is a mineral found in crystal as well as masses called gypsum rock.
It is useful in changing the soil structure of excessively heavy soils which have been impacted by heavy traffic, flooding, overcropping, or simply overly weatherized. In recent years, there has been an interest in the use of gypsum as a sustainable mineral binder. This app provides a quick reference for students, educators, professionals, or anyone interested in minerals. Mineral resources database minerals education coalition. These data are linked to mineral tables by crystallography, chemical composition, physical and optical properties, dana classification, strunz classification, mineral name origins, mineral locality information, and alphabetical listing of all known valid mineral. Pseudomorphs of gypsum after an unidentified mineral clark, 1993 heys mineral index. Occasionally, fgd gypsum contains minor amounts of quartz sio. It is found as massive material, clear crystals and parallel fibrous variety. This factsheet provides an overview of the gypsum supply in the uk. Sulfate form of sulfur doesnt acidify soil as it converts to the form plants use. Gypsum mineral specimen for sale dakota matrix minerals.
White mesa gypsum mining gypsum is mined at white mesa, sandoval county eagle materials, formerly centex american gypsum and used. It is found in layers that were formed under salt water millions of years ago. Specimen is approximately 4 inches 10 centimeters across. Welcome to the rruff project website containing an integrated database of raman spectra, xray diffraction and chemistry data for minerals. Gypsum sharp, waterclear, superb crystals of gypsum var. Gypsum is one of the few minerals that you can easily scratch with your fingernail. Caso4 2h2o c 20012005 mineral data publishing, version 1. The plant supplies central and northern chile and it will compliment knaufs plant in argentina. Moreover, gypsum is used worldwide in concrete for highways, bridges, buildings, and many other. If nothing helps, try to find a similar pattern from the mineral that you are studying on good journals. Gypsum is quite a uniquely versatile mineral, but it is mainly used for industrial purposes, and as a binding agent. Some gypsum specimens show evidence of this, containing growths of crumpling layers that testify to their expansion from the addition of water. The minerals education coalitions mec mission is to identify, produce and disseminate factbased k12 minerals education lessons and activities and to inform and educate the general public about the importance of mining in their everyday lives.
Gypsum is a very common rock, and it usually is found growing with many different sedimentary rocks. Material safety data sheet msds for gypsum complies with oshas hazard communication standard, 29 cfr 1910. The process of making gypsum products involves removal of the moisture content from the raw ore and reintroducing the. Gypsum is an evaporite mineral most commonly found in layered sedimentary deposits in association with halite, anhydrite, sulfur, calcite, and dolomite. Maybe the cod database could be installed in freesoftware. Historical and time series datadata series 140 historical statistics for mineral and material commodities in the united states a compilation of data on mineral production, imports, exports, stocks, reported and apparent consumption, and unit value the value in dollars of a metric ton of apparent consumption for approximately 90 mineral commodities from as far back as. It is one of a series on economically important minerals that are extracted in britain and it is primarily intended to inform the landuse planning process. Gypsum is a very soft mineral that is easily identified by its hardness, cleavage, and solubility in water. The top countries of suppliers are china, india, and pakistan, from which the percentage of gypsum mineral supply is 96%, 1%, and 1% respectively.
Gypsumation provides essential gypsum board information to aec professionals, contractors, and code officials twice annually. Gypsum plaster is a white cementing material made by partial or complete dehydration of the mineral gypsum, commonly with special retarders or hardeners added. The mineral consists of calcium sulfate, a chemical compound with myriad different uses. Gypsum is calcium sulfate, a naturally occurring mineral. Since it forms easily from saline water, gypsum can have many inclusions of other minerals and even trapped bubbles of air and water. Receive your complimentary electronic issue by signing up, below. It takes the form of crystals which can at times be found projecting from rock leading to its old english name of the. Gypsum has the same chemical composition as the mineral anhydrite, but contains water in its structure, which anhydrite lacks. Most gypsum in the united states is used to make wallboard for homes, offices, and commercial buildings. It has been touted as beneficial for breaking up compact soil, especially clay soil. Satin spar, a fibrous variety of gypsum from derbyshire, england.
Learn more about rocks and minerals, their origins and their uses. Gypsum has no effect on soil fertility, structure, or ph of any other soil type most urban soils are not improved by additional gypsum before adding gypsum or any chemical to a landscape, have soil analysis performed to identify mineral deficiencies, toxicities, and soil character. Knauf has acquired novochile for an undisclosed amount. A notforprofit 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. It is a major rock forming mineral that produces massive beds, usually from precipitation out of highly saline waters. It can also be found in blackboard chalk, drywall, and in. Applied in a plastic state with water, it sets and hardens by chemical recombination of the gypsum with water. It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboardsidewalk chalk, and drywall. Most gypsum in the united states is used to make wallboard for. Agricultural gypsum works as a soil amendment, conditioner and fertilizer to improve the soil. Its appearance is the result of centuries of water absorption. Gypsum is a hazardous substance subject to statutes promulgated under the subject act.
Concerning natural gypsum, the database contains measurements relevant to 502 samples from 16 eu member states. Garden gypsum information is gypsum good for the soil. These data are linked to mineral tables by crystallography, chemical composition, physical and optical properties, dana classification, strunz classification, mineral name origins, mineral locality information, and alphabetical listing of all. Complete, uptodate, mineral database containing 4,714 mineral species descriptions and comprehensive picture library of images. Mineral identification is finally made easy with the mineral database compiled by m. Gypsum is a common mineral found in many places around the world. Gypsum 250px type mineral essential minerals essential minerals.
In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. Mineral database for ios free download and software. Gypsum rock is usually white or colorless, although it may sometimes have gray, yellow, pink, or brown hues. The name selenite is mostly synonymous with gypsum but has been used historically to describe the transparent variety, as opposed to satin spar gypsum for. Found as both massive material, including the alabaster variety. Gypsum, one of the most widely used minerals in the world, literally surrounds us every day. Mineral identification is made easy with the mineral database compiled by m.
Gypsum is mined from sedimentary rock formations around the world. Gypsum mining gypsum industry news from global gypsum. Massive gypsum rock forms within layers of sedimentary rock, typically found in thick beds or layers. An information card with details on the mineral formation, characteristics, and uses is.
This and many more mineral specimens are available for sale at dakota matrix minerals. It is used as a flux for creating earthenware, and can be used as a fertilizer. Crystal structure database 3 amethyst galleries mineral gallery 4 athena 5 franklin mineralsdunn 6 franklin mineralspalache 7 geoscienceworld 8 glendale community college 9. Typically clear to white, gypsum may be colored reddish to brown or yellow if impurities are present.
Gypsum is a clear, crystallike mineral, that is generally found in sedimentary rock deposits. Deep below the rugged surface of indianas martin county people work in two underground mines to extract and process an unusual mineral resource gypsum. Methods of test for mineral gypsum internet archive. It is a very soft mineral and it can form very pretty, and sometimes extremely large colored crystals. Many anhydrite specimens absorb water, transforming into the more common gypsum. If a piece of gypsum is held over a flame, it will turn cloudy and opaque and give off water. Gypsum is very soft and very difficult to facet because of its perfect cleavage, therefore faceted stones are quite rare. Gypsum is a very common mineral in sedimentary environments.
Gypsum contains a large amount of water in crystalline form. It is the definition of a hardness of 2 on the mohs scale of mineral hardness. Is there any website where i can find 2thetatheta values for peaks. Gypsum is a soft mineral that is made of calcium sulfate, and can be identified as a very light brown color.
The mineral composition of fgd gypsum and mined gypsum is predominantly caso. The mineral database a computerized mineral reference book in a pc database format containing data for more than 4800 minerals. How gypsum is made into gypsum board and used as the most successful fire resistant building material ever. Gypsum statistics and information usgs mineral resources. It is the primary ingredient of plasterofparis, which is finely ground gypsum, and it is used in the production of cement.
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