epsomite


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epsomite

(ˈɛpsəmˌaɪt)
n
(Minerals) mineralogy a sulphate of magnesium
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Different minerals of evaporitic origin (halite [NaCl], gypsum [CaS[O.sub.4] x 2[H.sub.2]O], epsomite [MgS[O.sub.4] x 7[H.sub.2]O], and chloromagne-site [Mg[Cl.sub.2]]) were found within the argillites in boreholes drilled in the spring's area [10].
dolomite, epsomite, granite, gypsum, limestone, marble, mica,
Its common salt potassium dichromate (K Cr O ) agent in various laboratory and industrial applications.12Chromium VI is more toxic than in trivalent form because it readily enters the cells producing variouspathologicalconditionsincluding reproductive dysfunction induce toxicity provoke lipid peroxidation DNA damage cytotoxicity mutagenesis and carcinogenesis.3 Magnesium sulfate (MgSO4) is a chemical compound often encountered as the heptahydrate epsomite (MgSO4 7H2O) commonly called Epsom salt is used as a first line of treatment in the majority of cases.
Three types of minerals are formed depending of the fluid's evolution: water ice, clathrates of carbon dioxide and very hydrated magnesium sulfates (epsomite, meridianiite).
Pyrite, marcasite, dolomite, calcite, kaolinite, epsomite, and idrialin (named after Idrija) represent the main gangue or waste rocks (Mlakar, 1967, 1969; Mlakar and Drovenik, 1971).
Interesting occurrences of secondary sulfates such as melanterite, gypsum and epsomite have also been reported.
Composition and solubility of some common soluble minerals [8] Mineral Compound Solubility, mol/l Calcite CaC[O.sub.3] (calcium carbonate) 0.00014 Gypsum CaS[O.sub.4] x 2[H.sub.2]O 0.0154 (calcium sulphate) -- Ca[Cl.sub.2] x 6[H.sub.2]O 7.38 (calcium chloride) Magnesite MgC[O.sub.3] (magnesium carbonate) 0.001 Hexahydrite MgS[O.sub.4] x 6[H.sub.2]O 4.15 (magnesium sulphate) Epsomite MgS[O.sub.4] x 7[H.sub.2]O 3.07 (magnesium sulphate) Bischofite Mg[Cl.sub.2] x 6[H.sub.2]O 5.84 (magnesium chloride) Washing [Na.sub.2]C[O.sub.3] x 2.77 soda 10[H.sub.2]O (sodium carbonate) Mirabilite NaS[O.sub.4] x 10[H.sub.2]O 1.96 (sodium sulphate) Thenardite NaS[O.sub.4] (sodium sulphate) 3.45 Halite NaCl (sodium chloride) 6.15 Table 2.
381), but also in caves on dripstone and flowstone speleothems composed of calcite, epsomite, goethite, and even mud.
Yellow, pale green, and brown epsomite occurs as coatings on marcasite plates.
The seawater evaporation trajectory (red dashed line) was given by Fontes and Matray [52]; SW, G, H, E, and S represent points of standard seawater, precipitation of gypsum, halite, epsomite, and sylvite, respectively.