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Origin and Diagenesis of Gypsum and Anhydrite Datapages

Origin and Diagenesis of Gypsum and Anhydrite. R. C. Murray (2) ABSTRACT. Despite data on the stability of anhydrite at high earth surface temperatures, the observation of Recent gypsum and the evidence for formation and preservation of metastable gypsum suggest that this form may be the common if not universal original calcium sulfate mineral.

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Anhydrite an overview | ScienceDirect Topics

The conversion of gypsum to anhydrite causes other diagenetic effects at greater depths, especially melting, ... as they suggest the generation of oil at some time in the history of the Red Sea Basin (Ahmed, 1972). Many of the seeps seem to indicate migration along fault planes.

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gypsum | Definition, Uses, Facts |

Gypsum occurs in extensive beds associated with other evaporite minerals (, anhydrite and halite), particularly in Permian and Triassic sedimentary formations; it is deposited from ocean brine, followed by anhydrite and halite.

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Anhydrite Mineral Data

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ORIGIN AND DIAGENESIS GYPSUM ANHYDRI'J'P

teristic cycle in the diagenesis of gypsumanhydrite minerals; surface or nearsurface gypsum is replaeed by anhydrite as a resu_lt of burial and is in tum .replaced by gypsum if the anhydrite is thereafter brought dose tu the sutface. ORIGIN OF PRIMARY DEPOSITS surface, the replacement of anhydrite by gypsum

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Gypsum Wikipedia

Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4 ·2H 2 O. It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard chalk and massive finegrained white or lightly tinted variety of gypsum, called alabaster, has been used for sculpture by many cultures including Ancient ...

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Anhydrite definition and meaning | Collins English Dictionary

Anhydrite definition: a colourless or greyishwhite mineral, found in sedimentary rocks. It is used in the... | Meaning, pronunciation, translations and examples ... Word origin of 'anhydrite' C19: from anhydr (ous) + ite 1. ... Definition of anhydrite from the Collins English Dictionary.

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Wisconsin Geological Natural History Survey » Anhydrite

Description: Anhydrite is a relatively common mineral usually formed as a chemical precipitate from saline water in limestone, dolostone, and salt beds. Its presence is obscured by its tendency to dissolve or be altered to gypsum when exposed to groundwater or surface weathering.

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Anhydrite OilfieldWiki

The name anhydrite was given by A. G. Werner in 1804, because of the absence of water of crystallization, as contrasted with the presence of water in gypsum. Some obsolete names for the species are muriacite and karstenite; the former, an earlier name, being given under the impression that the substance was a chloride (muriate).

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ABCs of Gypsum Traditional Building

Patrick Webb describes the different types of gypsum and how they are used. Different types of gypsum and how to use them. ... The term “cement” is of Roman origin and referred to pozzolanic lime binders that were used structurally for concrete works, binding larger crushed stone or rubble. ... γ anhydrite – the almost but not quite ...

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Anhydrite: The mineral anhydrite information and pictures

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 water.

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Anhydrite and gypsum | SpringerLink

The calcium sulfate in evaporites sometimes occurs as gypsum, CaSO4 · 2H2O, sometimes as anhydrite, CaSO4, and sometimes as both minerals together. ... J. O., 1959. Origin of the New Brunswick gypsum deposits, Canadian Mining Metall. Bull., 52, 707–712. Google Scholar. Zen, E. An., 1965. Solubility measurements in the system CaSO 4NaClH 2 ...

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Using Strontium Isotopes to Determine the Age and Origin ...

The determination of a marine origin can be established by the consistency of strontium isotope results from samples at different stratigraphic levels in a single gypsum/anhydrite …

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Anhydrite dictionary definition | anhydrite defined

The normal sulphates are the more important, and occur widely and abundantly distributed in the mineral kingdom; anhydrite, gypsum, anglesite, barytes, celestite and …

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ORIGIN OF THE ANHYDRITE GAP ROCK OF AMERICAN SALT …

not specifically in question, to refer to it as the gypsum anhydrite cap. TWO HYPOTHESES OF ORIGIN The two hypotheses of the origin of anhydrite cap rock to be considered in this paper are (1) that the cap rock is derived from an original bed of sedimentary anhydrite …

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Anhydrite Ohio History Central

The name anhydrite comes from two Greek words meaning "without water." In fact, anhydrite is very "dry" and it easily takes up water. When it absorbs water it changes to gypsum, a …

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Gypsum, Anhydrite, and Limestone Ag Fines ACG Materials

Our bulk ground anhydrite, gypsum and limestone products include solution grade, 1/4" Minus Ag fines, and 1/8" Ag fines

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anhydrite | Definition of anhydrite in English by Oxford ...

Definition of anhydrite in English: anhydrite. noun mass noun. ... gypsum forms rather than anhydrite because the gypsumanhydrite stability boundary is crossed somewhere in this interval.’ ... What is the origin of 'sleep tight'? One of the mysteries of the English language finally explained.

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Anhydrite and gypsum | SpringerLink

Nodular and “chicken wire” gypsum and anhydrite: origin and significance. Individual ovoid to irregular shaped nodules (mm to cm scale) made of a fine felted mass of anhydrite laths (~100 microns long) embedded in carbonate or siliciclastic host sedimentary rocks have been described from many Phanerozoic evaporitebearing deposits.

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Anhydrite | Define Anhydrite at

Conversely gypsum may, under certain conditions, be dehydrated or reduced to anhydrite. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7. Various. British Dictionary definitions for anhydrite. anhydrite. noun. ... Word Origin for anhydrite. C19: from anhydr (ous) + ite 1.

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Anhydrite the Dry Gypsum

Anhydrite Origin. Four principal types of anhydrite occurrence can be recognized: Infrequently, anhydrite is a constituent of highlevel intrusive or volcanic systems, occurring as an essential mineral, as vein and gangue material, or as part of zeolitic vugs and geodes in the rock fabric.

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Origin and Diagenesis of Gypsum and Anhydrite

Origin and Diagenesis of Gypsum and Anhydrite. ... The origin of the mother brines, the glauberite genesis, the depositional model of the sodium sulphates, and the salinity evolution are discussed.

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The World Market for Gypsum and Anhydrite: A 2018 Global ...

"Gypsum and Anhydrite" as a category is defined in this report following the definition given by the United Nations Statistics Division Classification Registry using the Standard International Trade Classification, Revision 3 (SITC, Rev. 3).

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Anhydrite | Wiki | Everipedia

Anhydrite is commonly associated with calcite, halite, and sulfides such as galena, chalcopyrite, molybdenite, and pyrite in vein deposits. Occurrence Anhydrite is most frequently found in evaporite deposits with gypsum; it was, for instance, first discovered, in 1794, in a salt mine near Hall in Tirol.

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