Mirabilite


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Related to Mirabilite: Bloedite, Glauber's salt, Thenardite

mirabilite

[mə′rab·ə‚līt]
(mineralogy)
Na2SO4·10H2O A yellow or white monoclinic mineral consisting of hydrous sodium sulfate, occurring as a deposit from saline lakes, playas, and springs, and as an efflorescence; the pure crystals are known as Glauber's salt.

Mirabilite

 

(from Latin mirabilis, “wonderful”; named by the German chemist J. R. Glauber), also called Glauber’s salt, a mineral of the sulfate class with a chemical composition of Na2 [SO4]-10H2O; it contains 19.24 percent Na2O, 24.85 percent SO3, and 55.91 percent H2O. Mirabilite crystallizes in the monoclinic system, forming crystals ranging from short prismatic to acicular. It also forms grainy or powdery aggregates and microcrystalline incrustations. Mirabilite dissolves readily in water to form a bitter saline solution. In dry form it rapidly loses water and undergoes subsequent conversion into a white, powdery anhydrous mineral known as thenardite (Na2SO4). Mirabilite has a hardness of 1.5–2 on Mohs’ scale and a density of 1,480 kg/m3.

Mirabilite is a typical chemogenic product formed in salt lakes, shallow bays, and hot springs; it also occurs as an efflorescence. Because of its poor solubility at low temperatures, especially in the presence of NaCl, mirabilite is often deposited from saline waters during the winter season; this process is peculiar to the gulf of Kara-Bogaz-Gol in the Caspian Sea (USSR), Great Salt Lake in Utah (USA), and elsewhere. Mirabilite occurs in association with thenardite, astrakhanite, gypsum, and halite. It is primarily used in the chemical industry for the production of soda and sodium hydroxide; it is also used in the glassmaking, dyeing, and other industries, as well as in medicine.

V. P. PETROV

References in periodicals archive ?
Based on the theory that "hollow viscera function well when unobstructed," the treatment formulas for AP tend to contain purgatives such as rhubarb and mirabilite. In West China Hospital and elsewhere in China, there has been the important development of a "gutcentred" therapeutic strategy in the early management of AP.
Particularly high concentrations of [Na.sup.+], [Ca.sup.+2] and S[O.sub.4.sup.-2] would reduce the concentration of both trace elements in solution, associated with the high mirabilite and gypsum dissolution (Cordini, 1948).
These analyses are similar to other mineralogical studies in northeast Mendoza (Cordini, 1948; Carpio,1999), which include salt flats as well as sulfate and chloride salt deposits (gypsum, mirabilite, halite).
Mirabilite (phase III) also has an orthorhombic crystal structure with space group [C.sub.mcm].
A hypersaline coastal marine transgressive basin with sedimentary mirabilite formation, southern Banks Island, N.W.T.
Mirabilite [Na.sub.2]S[O.sub.4] * 10[H.sub.2]O (SO)
Da-Cheng-Qi decoction (DCQD) is compound preparation, composed of Rhubarb, Mirabilite, Fructus Aurantii Immaturus, and Mangnolia officinalis.
I like the contents--the right sort of level, on the whole, except for mirabilite. On the other hand, I don't care for the size--slightly larger than Min.
Other minor associated minerals include kalinite, mirabilite, alunogen, pickeringite and melanterite.
Big crystals of mirabilite from Soda Lake near Taft, California, will begin breaking down before your very eyes, within minutes of being collected.
White, hairy threads of mirabilite seem to be common within some mines, but when the mineral is taken out of the mine it rapidly transforms to thenardite (A.
Such minerals have rarely been studied or collected because they are usually unattractive in hand specimen; moreover, some have a tendency to deliquesce, dehydrate, oxidize, and generally self-destruct (e.g., melanterite, epsomite, coquimbite, mirabilite).