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(sĕl`əstīt) or


(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.



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.


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 mineral celestite, as such, is used as filler in paint industry and rubber filler in rubber industry, whereas, various salts of strontium are found numerous industrial applications, such as, in pyrotechnics, ceramic glazes firework and matches.
Other minerals present are siderite (-1-4%), plagioclase and K-feldspar (-2-4%), and other minerals in trace amounts such as aragonite, biotite, moscovite, apatite, celestite, zircon and monazite.
Mexico's Mineral Production Precious metals (kg) 1995 1996 Gold 19,944 24,083 Silver 2,495,388 2,536,000 Base metals (tonnes) Antimony 1,783 983 Arsenic 3,619 2,942 Bismuth 994 1,070 Cadmium 1,760 1,813 Copper 339,213 327,978 Lead 179,740 167,114 Molybdenum 3,881 4,211 Tin 0 2 Tungsten 286 188 Zinc 354,565 348,328 Ferrous metals and coal (tonnes) Coal 7,347,479 8,780,000 Coke 2,147,603 2,184,000 Iron 5,547,823 6,109,000 Manganese 141,184 173,000 Industrial minerals (formes) Barite 149,740 470,000 Celestite 138,342 141,000 Dolomite 931,770 930,000 Feldspar 121,779 140,000 Fluorite 522,655 524,000 Graphite 33,898 40,000 Gypsum 3,477,840 3,759,000 Kaolin 6,823 14,000 Phosphate 620,259 682,000 Salt 7,669,000 8,508,000 Silica 1,292,264 1,425,000 Sulfur 871,380 921,000 Wollastonite 0 2,584
Other trace minerals such as celestite, barite, rutile, Cr oxides, chlorite and palygorskite are also observed in the boundary layer, and in the dark marly clays deposited above this layer.
Company's mineral fillers/extenders include celestite, barytes, hydrated alumina, calcium carbonate, attapulgite clay, mica, and microsilica.
One case held what are sometimes called, "pig's feet," a name that has nothing to do with the animal world but is applied, rather, to fine blue celestite crystals in geodes from Madagascar, these were from the Robert Grant collection.
de Brodtkorb (1990) The Barite and Celestite Metallotects of the Neuquen Retroarc Basin, Central Argentina.
Other minerals offered are barytes, celestite, glass shards, and hollow glass spheres.