Vol 14, (1979)
Vol 14, (1979)
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- Category: Vol 14, (1979)
Authors: Pavel Mrázek & Viktor Fiala
Full version (11,170 kB)Abstract: A microscopic study of the heavily prolypitically altered rocks of the Zadní Chodov deposit, along with some macroscopic observations, enabled the division of hydrothermally altered minerals according to their importance and expansion into main, secondary and facultative minerals, and the description of some of their basic properties and relationships. This alteration is characterized by a mineralization development starting with the formation of chlorite I + sericite I, continuing through sericite II and quartz II, and culminating in the intensive formation of chlorite II. The hydrothermal solutions of the most strongly affected rock are completely chloritized. Some alteration minerals show signs of repeated hydrothermal redistribution, which, together with the formation of younger alteration minerals – epidote II, zeolites, carbonates, testify to a younger hydrothermal mineralization activity, by which strongly propylitic altered rocks were again affected.
