Petrology, mineralogy and geochemistry of the Permian and Triassic coals in the Leping area, Jiangxi Province, Southeast China

X. Querol, A. Alastuey, Xinguo Zhuang, J. C. Hower, A. Lopez-Soler, F. Plana, Rongsu Zeng

Research output: Contribution to journalArticlepeer-review

73 Scopus citations

Abstract

Permian and Triassic coals from a series of mines in Jiangxi Province, China, exhibit a number of unusual geochemical, mineralogical, and petrographic characteristics. The high volatile bituminous Permian coals have high concentrations of the suberinite-like maceral "barkinite." The origin, and even the distinct character, of "barkinite" are in dispute and, consequently, it has not been recognized as a distinct maceral by the International Committee for Coal and Organic Petrology (ICCP). The Permian bituminous coals have relatively high concentrations of pyrite and marcasite. Otherwise, detrital minerals dominate their geochemistry. The Triassic coals, all from one mine complex, have higher rank (a Permian coal is also mined). Most samples straddle the low volatile bituminous/semi-anthracite boundary. The one semi-anthracite-rank Permian coal shows signs of incipient coking. A Triassic coal in the same fault block is coked by an igneous intrusions found in the mine. The coals have, in general, been dolomitized. Aside from the geochemical imprint of the dolomitization, trace element associations suggesting a contribution from a detrital mineral assemblage dominate the coals.

Original languageEnglish
Pages (from-to)23-45
Number of pages23
JournalInternational Journal of Coal Geology
Volume48
Issue number1-2
DOIs
StatePublished - Dec 2001

Bibliographical note

Funding Information:
The authors would like to express their gratitude to the Spanish Ministry of Foreign Affairs and the Academia Sinica for supporting this study, and to the Leping Mining and the Jiangxi Coal Geological Bureaus for their interest and help during sampling. This study was financially supported by the Natural Sciences Foundation of China (NSFC) grant 49772174. We wish to thank Hermann Pfefferkorn, Bob Gastaldo, and Cortland Eble for discussions on the longevity of Lepidodendron, and Silvia Zafrilla for her support on the petrological interpretations of the volcanic rocks. The authors also thank Dr. Ward and Dr. Finkelman for their valuable comments, which improved the manuscript.

Keywords

  • Coal
  • Jiangxi Province
  • Permian
  • Suberinite
  • Trace elements
  • Triassic

ASJC Scopus subject areas

  • Fuel Technology
  • Geology
  • Economic Geology
  • Stratigraphy

Fingerprint

Dive into the research topics of 'Petrology, mineralogy and geochemistry of the Permian and Triassic coals in the Leping area, Jiangxi Province, Southeast China'. Together they form a unique fingerprint.

Cite this