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OZOKERITE, or OZOCERITE (Gr. 6~ ew, t...

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Originally appearing in Volume V20, Page 430 of the 1911 Encyclopedia Britannica.
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OZOKERITE, or OZOCERITE (Gr. 6~ ew, to emit odour, and iccpos, See also:wax)  , See also:mineral See also:wax, a combustible mineral, which may be designated as crude native See also:paraffin (q.v.), found in many localities in varying degrees of purity . Specimens have been obtained from See also:Scotland, See also:Northumberland and See also:Wales, as well as from about See also:thirty different countries . Of these occurrences the See also:ozokerite of the See also:island of Tcheleken, near See also:Baku, and the deposits of See also:Utah, U.S.A., deserve mention, though the last-named have been largely worked out . The See also:sole See also:sources of commercial See also:supply are in See also:Galicia, at Boryslaw, Dzwiniacz and Starunia, though the mineral is found at other points on both flanks of the Carpathians . Ozokerite-deposits are believed to have originated in much the same way as mineral See also:veins, the slow evaporation and oxidation of See also:petroleum having resulted in the deposition of its dissolved paraffin in the fissures and crevices previously occupied by the liquid . As found native, ozokerite varies from a very soft wax to a See also:black See also:mass as hard as See also:gypsum . Its specific gravity ranges from •85 to •95, and its melting point from 58° to roo° C . It is soluble in See also:ether, petroleum, See also:benzene, See also:turpentine, See also:chloroform, See also:carbon bisulphide, &c . Galician ozokerite varies in See also:colour from See also:light yellow to dark See also:brown, and frequently appears See also:green owing to dichroism . It usually melts at 62° C . Chemically, ozokerite consists of a mixture of various See also:hydrocarbons, containing 85.7% by See also:weight of carbon and 14.3% of See also:hydrogen . The See also:mining of ozokerite was formerly carried on in Galicia by means of See also:hand-labour, but in the See also:modern ozokerite mines owned by the Boryslaw Actien Gesellschaft and the Galizische Kreditbank, the workings of which extend to a See also:depth of 200 metres, and 225 metres respectively, See also:electrical See also:power is employed for hauling, pumping and ventilating .

In these mines there are the usual See also:

main shafts and galleries, the ozokerite being reached by levels driven along the strike of the See also:deposit . The wax, as it reaches the See also:surface, varies in purity, and, in new workings especially, only hand-picking is needed to See also:separate the pure material . In other cases much earthy See also:matter is mixed with the material, and then the See also:rock or shale having been eliminated by hand-picking, the " wax-See also:stone " is boiled with See also:water in large coppers, when the pure wax rises to the surface . This is again melted without water, and the impurities are skimmed off, the material being then run into slightly conical cylindrical moulds and thus made into blocks for the See also:market . The crude ozokerite is refined by treatment first with See also:Nordhausen oil of See also:vitriol, and subsequently with See also:charcoal, when the ceresine or cerasin of See also:commerce is obtained . The refined ozokerite or ceresine, which usually has a melting-point of 61° to 78° C., is largely used as an adulterant of beeswax, and is frequently coloured artificially to resemble that product in See also:appearance . On See also:distillation in a current of superheated See also:steam, ozokerite yields a See also:candle-making material resembling the paraffin obtained from petroleum and shale-oil but of higher melting-point, and therefore of greater value if the candles made from it are to be used in hot climates . There are also obtained in the distillation light See also:oils and a product resembling See also:vaseline (q.v.) . The See also:residue in the stills consists of a hard, black, waxy substance, which in admixture with See also:india-See also:rubber is employed under the name of okonite as an electrical insulator . From the residue a See also:form of the material known as See also:heel-See also:ball, used to impart a polished surface to the heels and soles of boots, is also manufactured . According to published See also:statistics, the output of crude ozokerite in Galicia in 1906 and 1907 was as follows: r906 . 1907 .

See also:

District . Metric Tons . Metric Tons . Boryslaw . 2,205 2,240 Dzwiniacz 26o 270 Starunia . 210 135 (B .

End of Article: OZOKERITE, or OZOCERITE (Gr. 6~ ew, to emit odour, and iccpos, wax)
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