The encyclopædia of geography- comprising a complete description of the earth, physical, statistical, civil, and political (1841) (14582786637)

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The encyclopædia of geography- comprising a complete description of the earth, physical, statistical, civil, and political (1841) (14582786637)

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Identifier: encyclopaediaofg01murr (find matches)
Title: The encyclopædia of geography: comprising a complete description of the earth, physical, statistical, civil, and political
Year: 1841 (1840s)
Authors: Murray, Hugh, 1779-1846 Wallace, William, 1768-1843 Bradford, T. G. (Thomas Gamaliel), 1802-1887
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Publisher: Philadelphia : Lea and Blanchard
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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nsiderable quantity of iron. The whole mines afford annually1,800,000 quintals of iron. Cobalt mines. The principal mines of this metal are those ofTunaberg, near to Nykoping, and at Awed, in East Gothland. These mines afford excel-lent cobalt, but the quantity is not great. Coal mines. Coal mines have been worked forsome time in Scania, two leagues from Helsinborg, and are affording a considerable return.Sulphur and vitriol. The pyritical minerals of Dylta afford annually 1050 quintals of sul-phur, and those of Fahlun about 100 quintals of the same substance. The vitriolic watersof Fahlun afford annually about GOO quintals of green vitriol, or sulphate of iron, and a smallquantity of blue vitriol, or sulphate of copper. Alum. The annual produce of alum isabout 42,600 quintals. Qitarries. Sweden possesses, besides its regular mines, also valua-Dle quarries of granite, porphyry, and marble. The porphyry quarries of Elfdal are the 478 MAP OF SWEDEN AND NORWAY. Fig. 237 25 50 100 150 200
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16 Loogitode £ast 20 ttom Greenwich 24 Book I SWEDEN AND NORWAY 479 largest and most celebrated in Europe. Nearly all the fine modern works m porphyry arein the porphyry of Elfdal. (2.) Geology of Norway and Lapland.—I. Primitive rocks. These wild but highlyinteresting countries are principally composed of primitive and transition rocks; secondaryrocks occur but rarely, and alluvial deposits are not so abundant as in many other less exten-sive regions. Granite is a rare rock in Norway and Lapland, and may be considered oneof the least abundant rocks in Scandinavia. The granite frequently appears in veins tra-versing the primitive stratified rocks, or running parallel with beds or strata; and sometimesit can be seen spread over the surface of mica slate, as at Forvig, or irregularly associatedwith clay slate and diallage rock, as in the island of Mageroe. Gneiss seems to be by farthe most frequent and abundant rock in Scandinavia, all the other primitive rocks appearingto be in some

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