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Investigation of the Petrographic, Mineralogical and Geochemical Composition of the Coal From the Current Muğla-Yatağan Coalfield Drilling Data
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Investigation of the Petrographic, Mineralogical and Geochemical Composition of the Coal From the Current Muğla-Yatağan Coalfield Drilling Data
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Investigation of the Petrographic, Mineralogical and Geochemical Composition of the Coal From the Current Muğla-Yatağan Coalfield Drilling Data
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Dissertation
Investigation of the Petrographic, Mineralogical and Geochemical Composition of the Coal From the Current Muğla-Yatağan Coalfield Drilling Data
2024
Overview
This study aims to report and evaluate the petrographic, mineralogical and geochemical composition of four samples taken from the B-22 borehole core obtained from the newly discovered coalfield located between Şahinler and Bozüyük in the southwest of Yatağan district of Muğla province.The results of the proximate analysis completed earlier from the samples were as follows; the average total moisture is 5.28%; the ash yield 35.38% (dry basis), volatile matter yield 39.23% (dry basis); fixed carbon yield 25.39% (dry basis); the total sulfur content 5.47% (dry basis); the net calorific value 16.08 MJ/kg and the gross calorific value is 16.89 MJ/kg. The ash value of sample number 4 is 71.50%; hence, it is not considered as coal. The sample is classified as a carbonaceous rock, therefore being not included from the averaged values.The result of maceral analysis and reflectance measurements (in Appendix II) on whole rock basis are as follows: the average telohuminite content is 14.67 vol.%, the average detrohuminite 50,67%, the average gelohuminite 11.34%, the average liptinite (mainly sporinite, alginite and cutinite) 5.67%, the average inertinite (mainly fusinite, funginite and micrinite) 3.67%, and the average mineral content is 14% (again, sample 4 is excluded from the average calculations). Huminite group macerals are common, while the inertinite and liptinite macerals are rare and the mineral matter content varies.Recently laser micro-Raman Spectroscopy is widely used to determine the structural properties of carbonaceous materials. Thus, a set of micro-Raman spectroscopic data has been acquired from huminite and inertinite macerals. The micro-Raman work was performed on one sample only. The micro-Raman data obtained were evaluated using three different Raman Spectroscopy software (IFORS (Python software), SpectraGryph and OriginPro) in order to compare the processed results. According to the results, the values of the D1 band of the fusinite macerals vary between 1345 and 1397 cm-1 with an average of 1375.17 cm-1. The D1 band values of ulminites range between 1356-1362 cm-1 with an average of 1359 cm-1. The values of the G band range between 1587-1609 cm-1 in fusinites and the average is 1598.75 cm-¹. The average D1 and G bands obtained are wilhin the range of values of the coal spectrum obtained by Tuinstra and Koenig (1970), and Friedel and Carlson (1971). Data obtained from Micro-Raman Spectroscopy encourage further inquiry of the method as a complementary method in low-rank coals.
