celestite


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celestite

(sĕl`əstīt) or

celestine

(sĕl`əstĭn, –tīn), mineral appearing in blue-tinged or white orthorhombic crystals or in fibrous masses. The natural sulfate of strontium, SrSO4, it is important as a source of strontium and of certain of its compounds, e.g., strontium hydroxide, used in refining beet sugar, and strontium nitrate, used in red signal flares. It occurs in England, in Sicily, and in the United States on islands in Lake Erie and also in Pennsylvania, New York, and Ohio.

Celestite

 

a mineral of the sulfate class, with the composition SrSO4. Celestite often contains admixtures of Ca and Ba. It crystallizes in the orthorhombic system, forming tabular or columnar crystals. Its segregations are often in the form of nodules or concretions, in which the mineral forms fibrous or granular aggregates. Celestite’s color, which is due to various point defects of the crystal structure, may be light blue or gray-blue, with a red or yellow tinge, but it disappears upon heating. The density is about 4,000 kg/m3, and the hardness is 3.0–3.5 on Mohs’ scale.

The primary deposits usually occur in limestones, dolomites, and gypsum, in which celestite is associated with sulfur, rock salt, aragonite, and calcite. The principal deposits in the USSR are located in Middle Asia, the Volga Region, and the southern Urals. There are also major deposits in Great Britain, the Federal Republic of Germany, the United States, and Italy. Celestite is a raw material for the production of strontium compounds, which are used in the sugar, glass, ceramics, and pharmaceutical industries, in the production of pyrotechnics, and in metallurgy for the manufacture of special alloys.

celestite

[′sel·ə‚stīt]
(mineralogy)
SrSO4 A colorless or sky-blue mineral occurring in orthorhombic, tabular crystals and in compact forms; fracture is uneven and luster is vitreous; principal ore of strontium. Also known as celestine.
References in periodicals archive ?
The total estimated deposits of celestite mineral in Pakistan is 1,76,000 Metric Tons (approx.) out of which 40,000 Metric Tons reserves are available in Daud Khel area [2].
(1973) Quelques considerations sur le gisement de celestite de Sakoany.
Business meetings can be boosted into positive overdrive by placing a chunk of beautiful blue celestite in the boardroom to ease communications.
Mineral fillers/extenders include celestite, barytes, calcium carbonate, attapulgite clay, bentonite clay, kaolin clay, talc and slate.
Altamont's financial services companies include Atlanta, Ga.-based McLarens, a claims management and property loss adjustment business, Irving, Texas-based Celestite, a non-standard auto managing general agency, Atlanta, Ga.-based Embark General, a managing general agency, and Accelerant, a U.K.-based agency.
The results from hydrochemical modeling with PHREEQC (see "Methods and Data") show that at production site several silica (albite, anorthite) including clays (chlorite, montmorillonite, and talc) and different sulfate minerals (celestite, gypsum, and barite) are oversaturated.
Not only were top-shelf minerals going to be for sale; I was going to see those great new fluorite on celestite specimens from Clay Center, Ohio.
Sulphate minerals are limited to gypsum and small amounts of anhydrite (XRD), although some celestite was also observed in the petrographic examinations.
Richard Mozley's MeGaSep multigravity separator is designed to separate all fine and ultra-fine particles, and has applications in the recovery of precious metals, base metal oxides and sulphides, and the upgrading of industrial minerals such as fluorspar, celestite and barytes.
Company's mineral fillers/extenders include celestite, barytes, calcium carbonate, attapulgite clay, bentonite clay, kaolin day, talc and slate.
sulfate-poor brine (2000) [69] (iii) daughter minerals: gypsum, celestite, and barite Okorusu, Namibia; Orthomagmatic in origin; high carbonatite; Buhn in alkali + F, low in Ca et al.