Gypsum R040029 - RRUFF Database: Raman, X-ray, Infrared ...
REFERENCES for Gypsum; American Mineralogist Crystal Structure Database Record: [view record] Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America.
Gypsum Facts - softschools.com
Gypsum is a mineral with bendable crystals. It is often mined in the US, Mexico, Nova Scotia, and Australia. It is usually colorless, white, or gray in color. Although gypsum is a mineral, it can exist as a sedimentary rock. It is a sulfate containing oxygen and sulfur. The word gypsum is derived from the Greek word gypsos which means chalk or ...
Ammoniotinsleyite, (NH4)Al2(PO4)2(OH)⋅2H2O, a new mineral ...
Ammoniotinsleyite, (NH4)Al2(PO4)2(OH)⋅2H2O, a new mineral species from the guano deposit at Pabellón de Pica, Iquique Province, Chile - Volume 84 Issue 5 ... Associated minerals are halite, gypsum, salammoniac and clay minerals. Fig. 1. ... The crystallographic information files have been deposited with the Principal Editor of Mineralogical ...
Gypsum - Minerals Education Coalition
USGS Minerals Information: Gypsum - USGS Mineral Resources … Gypsum, one of the most widely used minerals in the world, literally surrounds us every day. ... crystallographic information about gypsum mineral 9.1 (Total: 10) 2404 Votes 4808 Comments Give e-mail to us. ...
Uses of Gypsum- Introduction, Formation, Different ...
Gypsum is a type of soft sulfate mineral known for its usefulness in day-to-day lives. It is also referred to as calcium sulfate dihydrate. It consists of water, calcium sulfate and oxygen molecules and is chemically represented by the formula CaSO 4.2H 2 O. An evaporite mineral, gypsum is mostly found in layers of sedimentary rocks on the earth's crust along with other minerals such as ...
Desert rose (crystal) - Wikipedia
A desert rose is an intricate rose-like formation of crystal clusters of gypsum or baryte, which include abundant sand grains. The "petals" are crystals flattened on the c axis, fanning open in radiating clusters.. The rosette crystal habit tends to occur when the crystals form in arid sandy conditions, such as the evaporation of a shallow salt basin. The crystals form a circular array of flat ...
Role of impurities in gypsum– bassanite phase transition ...
minerals. The spectral variations of some soft and hard modes, with temperature and/or pressure, provide a definite information about the structural variation in minerals4,5. Gypsum, one among the simple hydrous minerals, has a transition sequence of gypsum-bassanite-anhydrite, and these phase transitions are believed to be controlled
gypsum | Definition, Uses, & Facts | Britannica
Fast Facts. gypsum, common sulfate mineral of great commercial importance, composed of hydrated calcium sulfate (CaSO 4 ·2H 2 O). 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 ...
Supporting Information Microscopic Studies of Calcium ...
S-6. Crystallographic parameters for the gypsum and anhydrite crystals grown Table S-6. Crystallographic parameters for the gypsum and anhydrite structures formed in the hexane (uncovered) crystal growth experiment Mineral name Gypsum Anhydrite, syn Compound name Calcium sulfate hydrate Calcium sulfate Chemical formula CaSO 4 ·2H 2 O CaSO 4
Calcium - The Cambridge Crystallographic Data Centre (CCDC)
Part of one layer of the crystal structure of gypsum, which is a mineral that contains calcium sulfate. Calcium ions are shown as blue spheres. Facts about this structure: Formula: H 4 Ca O 6 S; Structure name: Calcium sulfate(VI) dihydrate; Fun fact about the structure: Gypsum is made up of layers that contain calcium and sulfate ions. This ...
Camiro 1.0 The Romanian Cave Minerals Database Program
CAMIRO 1.0 is a collection of geologic, mineralogic, crystallographic, and protection information about cave minerals. It holds and organizes large amounts of information (including photos), and makes any item immediately accessible. Related information (e.g., mineralogical or crystallographic) are grouped together to form records.
(PDF) Three study cases of growth morphology in minerals ...
Three study cases of growth morphology in minerals: Halite, calcite and gypsum May 2016 Progress in Crystal Growth and Characterization of Materials 62(2):227-251
A crystallographic study of crystalline casts and ...
Instead, the morphology of the crystal cast provides the only crystallographic information on the original mineral phase and the environment of crystal growth. This article reports an investigation of crystal pseudomorphs and crystal casts found in a carbonate-chert facies from the 3.48 Ga-old Dresser Formation (Pilbara Craton, Australia ...
(PDF) The carbonatation of gypsum: Pathways and ...
SEM micrograph showing the ACC layer that carpets the gypsum (010) surface after a 1 min reaction with a 0.5 M Na 2 CO 3 aqueous solution. Note the parallel lines that reproduce the cleavage lines ...
gypsum - Michigan State University
Gypsum is a non-metallic mineral, found in rock form. It is composed of 79.1% calcium sulphate and 20.9% water, by weight. Chemists call it Hydrous Calcium Sulphate, and as there is one molecule of calcium sulphate combined with two molecules of water. It has the chemical formula CaSO 4 2H 2 0. By volume this works out to nearly 50% water in ...
Gypsum Mineral | Uses and Properties
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.
The 'desert rose' crystal | Crystallography365
The "petals" are crystals flattened on the c crystallographic axis, fanning open in radiating flattened clusters. These are formed in arid sandy conditions such as the evaporation of a shallow salt basin. The desert rose may also be known by the names: sand rock, rose rock, selenite rose, gypsum and barite rose.
Gypsum Chime Page - University of Wisconsin–Madison
Crystallographic Data Occurrence and Use. Gypsum is an important rock-forming mineral in evaporite deposits of chemical sedimentary rocks, where they may be associated with halite, and in carbonatites in association with barite. Gypsum deposition may form massive and stratified beds that are several meters thick, usually in association with ...
Gypsum: Mineral information, data and localities.
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 …
Baryte cohesive layers formed on a (010) gypsum surface by ...
The mineral replacement of gypsum (CaSO 4 ·2H 2 O) by baryte (BaSO 4) is relevant to technological and industrial applications, including its use as a plaster or stone consolidant in cultural heritage conservation.In the present study, we provide experimental evidence suggesting that, during the interaction of gypsum cleavage surfaces with barium-bearing solutions, a pseudomorphic …
Mineral properties - The Australian Museum
10/08/21. Minerals can be identified using a number of properties. These include physical and chemical properties such as hardness, density, cleavage and colour, crystallography, electrical conductivity, magnetism, radioactivity and fluorescence. Hardness. Mohs' hardness scale. This is the resistance of a mineral surface to scratching. This is ...
Reaction pathways and textural aspects of the replacement ...
existence of crystallographic relationship between both structures. However, we have previously shown that the interaction between gypsum (010) surfaces and carbonate-bearing aqueous solutions at ambient Earth surface conditions proceed by an initial random nucleation of calcite on gypsum (010) surfaces, although as the reaction progresses,
Gypsum Mineral Data
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
Gypsum Statistics and Information - USGS.gov
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 in concrete for highways, bridges, buildings, and many other
gypsum | Crystallography365
Posts about gypsum written by crystallography365. As mentioned, the crystals are a pure form of gypsum known as selenite. The crystal structure of selenite/gypsum (CaSO 4 •2(H 2 O)) has been featured before on this blog in its "desert rose form". The main difference between the desert rose crystals and selenite is the presence of sand impurities in desert rose.
All About Gypsum - Rock and Mineral Planet
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.
Gypsum - soils.wisc.edu
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 material, including the alabaster variety; and clear crystals, the selenite variety; and, parallel ...
Gypsum - Minerals Education Coalition
Gypsum. Gypsum is a mineral found in crystal as well as masses called gypsum rock. It is a very soft mineral and it can form very pretty, and sometimes extremely large colored crystals. 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 ...
Minerals - Comprehensive guide to Rocks and Minerals
Complete Information Guide to Rocks, Minerals, & Gemstones . Minerals. Minerals & Varieties. View All Minerals; View by Alphabetical Order
Gypsum - Metaphysical Healing Properties
Gypsum is one of the more common minerals in sedimentary environments. It is a major rock forming mineral that produces massive beds, usually from precipitation out of highly saline waters. Since it forms easily from saline water, gypsum can have many inclusions of other minerals …
