Tonstein from the coal seam no. 385 in the Lublin Formation (Lower Westphalian) from the Lublin Coal Basin

Authors

  • Ireneusz Lipiarski Akademia Górniczo-Hutnicza, al. Mickicwicza 30, Kraków
  • Marek Muszyński Akademia Górniczo-Hutnicza, al. Mickicwicza 30, Kraków
  • Jerzy Stolecki Akademia Górniczo-Hutnicza, al. Mickicwicza 30, Kraków

Abstract

One or locally two layers of a tonstein (Graupentonstein) have been observed in the coal seam no. 385 (Westphalian B) between Ostrów Lubelski and Dorohucza. Due to its wide reach the tonstein discussed represents a key horizon of a great practical significance. It is built, apart from the dominant kaolinite, of accessory or trace amounts of: organic matter, quartz, feldspars (sanidine, plagioclase), apatite, crandallite, chaicedone, siderite and pyrite. Due to the petrographic suggestions such as the presence of quartz, feldspars, biotite and apatite, displaying features suggesting their volcanic origin, it can be assumed that the tonstein has been formed resulting from the alteration of the pyroclastic material deposited in the peatbog.

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Published

2013-03-22

Issue

Vol. 37 No. 4 (1993)

Section

Articles

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