·Limestone is a sedimentary rock primarily composed of calcium carbonate CaCO3 in the form of mineral calcite or is one of the most common and widely distributed rocks on Earth with a wide range of uses in various industries and natural settings Limestone forms through the accumulation and compaction of marine
·The dolomite of the Cambrian Sanshanzi Formation is another important gas bearing horizon that is widely distributed in the Ordos Basin and has a large thickness Neoproterozoic variations in the C isotopic composition of seawater Stratigraphic and biogeochemical implications Precambrian Res 73 1/2/3/4 1995 pp 27 49
·Composition La dolomite est chimiquement similaire à calcaire car tous deux sont principalement composs de carbonate de calcium CaCO3 Cependant la dolomite contient un composant supplmentaire de magnsium MgCO3 ce qui en fait un double carbonate Cette teneur en magnsium distingue la dolomite du calcaire
·XRF analysis showThe dolomite raw materials contain fewer amounts of Si and Al but high Ca in its composition Dolomite geopolymer composites with 20M of NaOH shows greater and optimum compressive
DOI / Corpus ID 205286631; Oxygen isotope composition of the Phanerozoic ocean and a possible solution to the dolomite problem article{Ryb2018OxygenIC title={Oxygen isotope composition of the Phanerozoic ocean and a possible solution to the dolomite problem} author={Uri Ryb and John M Eiler}
·The dolomite sample used in this study originates from the Haute Valle de l Aude France It is a polycrystalline white dolomite of hydrothermal origin with a millimetric grain size The chemical and mineralogical composition of this dolomite is given in Table 1
·Firstly we studied the phase composition microstructure and surface properties of raw and calcined dolomite at different temperatures Then SSPCMs with different mass fractions of SSMs and PCMs were prepared by cold pressing and hot sintering methods and the mass fractions of suitable SSMs were screened by
·Dolomite is a calcium magnesium carbonate with the chemical composition CaMg CO 3 2 constituting a rock forming mineral found in abundance around the has numerous commercial uses Dolomite mineral is rarely found in modern sedimentary environments; however dolomite rocks dolostones are common in geological history
·Over time the dolomite carbon isotopic composition changed due to dissolved carbon from organic matter which produced CO 2 via oxidation disintegration In the case of light carbon the rich organic matter resulted in a lighter isotopic composition of the dissolved carbon and modified the lacustrine deposit dolomite carbon isotopic
·When limestone or dolomite is subjected to high temperatures and pressures it undergoes a chemical and mineralogical transformation The original minerals and textures are destroyed and new crystals of calcite or dolomite grow in their place Chemical Composition The chemical composition of marble is primarily made up of
·First asphaltenes and adsorbents dolomite properties were analyzed via several analytical techniques Then adsorption of four asphaltene samples of various origins and chemical composition on dolomite at micron and nano size were carried out in both static and dynamic modes and results were examined following the adsorption process
·A SEM images of dolomite spheroids detected within buried microbial mat B Higher magnification of a dolomite spheroid indicates small sized dolomite rhomboids C Single dolomite rhomboeder with D EDX spectrum indicating a Ca Mg carbonate composition E Dolomite encrusted mineral F Higher magnification of marked area in E
·Dolomite is a calcium and magnesium carbonate that constitutes approximately 2% of the earth s crust of sedimentary rocks that can be found in massive beds geologists refer to a rock that has in its composition at least 90% of dolomite calcium magnesium carbonate mineral
·Thermal decomposition behaviour of dolomite sample has been studied by thermogravimetric TG measurements Differential thermal analysis DTA curve of dolomite shows two peaks at 777·8°C and 834°C The two endothermic peaks observed in dolomite are essentially due to decarbonation of dolomite and calcite respectively The
·Semantic Scholar extracted view of "Magnesium isotope composition of sabkha porewater and related Sub Recent stoichiometric dolomites Abu Dhabi UAE " by A Geske et al The dolomite problem refers to the rare dolomite formation in modern oceans that is in sharp contrast to the widespread ancient dolostone in rock record
DOI / Corpus ID 205286631; Oxygen isotope composition of the Phanerozoic ocean and a possible solution to the dolomite problem article{Ryb2018OxygenIC title={Oxygen isotope composition of the Phanerozoic ocean and a possible solution to the dolomite problem} author={Uri Ryb and John M Eiler}
Dolomite Group Ankerite Dolomite Series Composition of some ferroan dolomites Journal of Geology 70 659 688 Van der Veen 1965 Calcite dolomite intergrowths in high temperature carbonate rocks American Mineralogist 50 2070 2077
·The calcium isotope composition of seawater δ 44/40 Ca sw records important information on the evolution of the calcium and carbon cycles over geologic the past two decades many attempts have been made to reconstruct the Neogene δ 44/40 Ca sw variation using various calcium isotope records of seawater or
·Dolomite was the first fertilizer used to prevent hypomagnesemia Cunningham 1936 When applied at rates between 100 and 540 kg Mg/ha the Mg concentration of temperate forage is increased by g/kg DM Table These increases in Mg concentration in the forage were associated with a rise in the level of
·The Core 2 m deep shows coarse grained crystalline massive dolomite with remnants of oolites and shell fragments suggesting a marginal shallow water setting
Journal of Hydrology 1 1963 288 310; North Holland Publishing Co Amsterdam Not to be reproduced by photoprint or microfilm without written permission from the publisher SOLUBILITY OF DOLOMITE AND COMPOSITION OF FLORIDA GROUND WATERS K JINGHWA HSU Abstract Published figures on the solubility of dolomite expressed in
·The chemical composition of the dolomite end member was determined by X ray Fluorescence These data fit well with the XRD analyses Table 1 in that only traces of elements typical of silicate minerals were detected SiO 2 = mol% K 2 O = mol% Al 2 O 3 and Na 2 O were below the detection limit Given the trace amounts of Si
·Dolomite can form as a major mineral component of marlstones and limestones and is an important sink for magnesium in the marine environment Dolomite…
·The Khor Al Adaid sabkha in Qatar is among the rare extreme environments on Earth where it is possible to study the formation of dolomite—a carbonate mineral whose origin remains unclear and has been hypothetically linked to microbial activity By combining geochemical measurements with microbiological analysis we have investigated the
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