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- THE MINERALOGY OF THE PELITIC FRACTION OF THE LOWER CARBONIFEROUS DOMBAROVSK ANTHRACITE DEPOSITS, SOUTH URALS, RUSSIA
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THE MINERALOGY OF THE PELITIC FRACTION OF THE LOWER CARBONIFEROUS DOMBAROVSK ANTHRACITE DEPOSITS, SOUTH URALS, RUSSIA
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Abstract
The sedimentary complexes of the Dombarovsk deposits (Ural eastern slope) underwent important transformation. The diagenetic rock alteration and the organic matter metamorphism observed in the Lower Carboniferous rocks are assumably due to frequent high tectonic stresses of various directions. Coals were transformed into anthracites of high degree of metamorphism, with a graphite-like structure in most altered parts. Intensive P-T stresses also transformed the minerals. The host rock minerals became structurally altered as to yield the 2M micas typical of high-temperature.
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A propos de : Irina E. STUKALOVA
Geological Institute of the Russian Academy of Sciences, Pyzhevskyi per. 7, Moscow, 119017 Russia. E-mail: stukalova@ginras.ru
A propos de : Elena V. POKROVSKAYA
Geological Institute of the Russian Academy of Sciences, Pyzhevskyi per. 7, Moscow, 119017 Russia
A propos de : Engelina I. ALYSHEVA
Central Research Institute of Geological Prospecting for Base and Precious Metals, Moscow, Russia
A propos de : Arif T. RASULOV
Institute of Geology and Geochemistry, Pochtovyi per. 7, Yekaterinburg, 620151 Russia