ORGANIC GEOCHEMICAL AND PETROGRAPHİCAL CHARACTERISTICS OF KARLIOVA HALIFAN (BINGOL) COALS

Indexed In

Volume 144 / 2012

Authors:

Orhan KAVAK, Selami TOPRAK

Keywords:

Halifan, Bingöl Karlıova, Organic Geochemistry, Organic Petrography, Tertiary, Coal.

Abstract:

In this study, petrographic and organic geochemical characteristics of the Tertiary Karlıova-Halifan coals (Bingöl) were investigated. Determination of coal quality was based on chemical (moisture, volatile matter, fixed carbon, ash) and elemental analyses (C, H, O, S, N). The values of the huminite reflectances in  organic matter-rich coal levels change between 0.368 and 0.573 %, which  correspond to low maturity levels. These parameters are in good aggrement with their fluorescence colors, calorific value (average original-2266, dry-3177 Kcal/kg, upper calorific value) and average Tmax (417oC) values. The organic material in studied coals show low grade transformation due to low lithostatic pressure. Therefore, the petrographic characteristics and quality values of Karlıova Halifan coals suggest classification as sub-bituminous coal – Lignite. Rock Eval analysis results point to an immature to early mature hydrocarbon generation for hydrocarbon derivatives formed by type II/III and III kerogen with average  Tmax values of 417oC.  The coals mainly constitute huminites, with small amounts of inertinite and liptinite type macerals. The Karlıova Halifan coals have high contents of ash and sulphur , clay and calcites as minerals, and gelinites as individual macerals.