Rzekomo pirogeniczne kwarce

Authors

  • Antoni Łaszkiewicz

Abstract

SEEMINGLY PYROGENIC QUARTZIn modern literature on petrography and geology we find a number of papers devoted to the investigation of pyroclastic rocks, such as tuffs, tuffites and bentonites. These deposits, of a wide range of age extending from the Cambrian to the Neogene, are encountered which increasing frequency during geological prospecting and in bore-holes; close attention is being paid to them both in Poland and abroad. Of particular interest is the presence of bipyramidal quartz crystals in these rocks. As a rule, petrographers studying the petrography of pyroclastic rocks look upon this quartz as an unaltered mineral of volcanic origin.

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Issue

Vol. 4 No. 3 (1960)

Section

Articles

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