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| Sciences, ul. Vonsovsky 15, Yekaterinburg, 620016 Russia b Institute of Geology, Ufa Scientific Center,...of Sciences, ul. Karla Marksa 16/2, Ufa, 450077 Russia *e-mail: amas2004@mail.ru **e-mail: georg_petrov@mail...island-arc systems ((а) Shchuch’in, (b) Voikar, (c) Tagil, (d) Magnitogorsk); (7) East Ural collage of tectonic...(carbonaceous)–chlorite–sericite–quartz, albite- and magnetite-bearing schists, phyllites, carbonate rocks with...Isherim and Bashkir anticlinoria, respectively. The magnetite-bearing sericite–chlorite–quartz schists of the |
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| of the minerals (hematite -* mushketovite -* magnetite) 2 does not belong with the high temperature endogenic...volcanogenic-sedimentary) which contain contact-metasomatic magnetite ores . . . this sequence of the volcanogenic formations...rocks also suggest a resemblance in origin of the magnetite and pyrite ores they contain. The majority of...Altay-Sayan (in "Papers on Geology and Genesis of Magnetite Ore Deposits in Siberia," edited by G. L. Pospeloy)...geosynclines. Magmatic accumulations of iron (magnetite, hematite) in effusive volcanogenic-sedimentary'host |
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| natural oxides, hydroxides of heavy metals such as Fe, Mn, Cu, and others, that are formed by reactions... and Dole) Material and Source Cuprite Nizhny Tagil Red copper ore U. S. A. Brown ironstone Central...ore U. S. A. U. S. A. Magnetite Mt. Blagodat Mt. Blagodat Mt. Blagodat Mt. Blagodat Maritime area [Tr.: |
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| servations during the International Geologic Congress in Russia " The Congress meets every three or four years...various parts of the world. The last convention in Russia was some 40 years ago, and at the present gathering...the course of the field trips follows: Chromite:-At Mt. Saranovskoye the chromite occurs as lensesin the...chromite lenses into a number of segments.The deposit is about 800 meters long and an estimated 150 meters...Iron:-A number of localities were visited NIt. Blagodat, discovered in 1735, is of the typical contact |
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| rocks through which the solution passed, they will deposit their matter in response to the ac- tion of steam...activity; this activity was sufficiently intense to deposit lazurite bodies in which hauyne, lazurite and nepheline...presence of ascending H20, CO2, K2O, Na20, 02, MgO, Fe, CaO, hypothermal solutions; this hypothesis has...such zones is the product of reactions between magnetite and sodic feldspar (orthoclase); however, the...product of reactions among augite, plagioclase and magnetite, providing an ample supply of magnesium is available |
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| Se See. and Palaeogeography and Description fe C210 А SPAT e oe Пе a BTM io Transbaikalia...widely understood. By the 16th and 17th centuries in Russia the mining industry was already flourishing. Numerous...together the growing volume of geological knowledge of Russia. Fortunately outstanding geologists, namely the...Russian geologists. In 1845 the monograph Geology of Russia appeared, the first volume of which (geology) was... PRE-REVOLUTIONARY PERIOD 5 System was first recognized in Russia in the second volume. Now the first volume has |
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| The Development of the North Under Capitalism Russia embarked on capitalist development much later than...mainly in the central and southern parts of European Russia, where a large section of the popu¬ lation was...fishing. With the development of capitalism in Russia at the turn of the century forestry, saw-milling... which they processed and later re-exported to Russia. Large quantities of Nor¬ wegian herring were sold...imported through Arkhangelsk. The export of goods from Russia via that port also increased steadily. During the |
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| the Steel ces Meee fe Me. AmLO UN EOesAMOLCAS . 2) oe ies ed) SL Nd Sei, oe be BY fe 1 se! pth Pen ede...ae. «(Ob Breer citer Aone lane arte ALTIC A Ries Fe ite ink acilhmek ae eks aes 70,000 OCOaMiaent atic...nation which possesses a chromite or manganese deposit, sought by each of several industralized nations...beneficiation, or treatment of the ore so as to bring a deposit of low-grade ore into the category of commercial...coking coal, or limestone can be found in a large deposit; there are fewer districts where two of them can |
