## 5 Interpretation and Discussion
### Maceral Group
#### 5.1.1 Vitrinite
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Group** & **Maceral** & **Origin** & **Significance** \\ \hline \multirow{2}{*}{**Vitrinite**} & \multirow{2}{*}{Telovirrinite} & Humidified stem, root bark, and leaf tissue, which has survived intact and displays remnants of cellular structure & High vitrinite content, especially the structured telovirrinite, indicates a permanently water-saturated peatland balanced or high accommodation creation \\  & & Stem, root, bark, and leaf tissue deposited as fine-grained & \\  & & & \\  & & & \\  & & & \\ \hline \multirow{2}{*}{**Liptinite**} & \multirow{2}{*}{Sporinite} & Resins, fats, waves, and oils & Increased liptinite content indicates loss of biomass \\  & & Cutinite & Cuticles of needles, shots, stalks, leaves, roots, and stems \\  & & Resinite & Raisins, fats waves, and oils \\ \hline \multirow{2}{*}{**Intertinite**} & \multirow{2}{*}{Micrinite} & Product of fine-grained oxidized plant material & high intertinite content, especially structured fusinite and semi-fusinite indicate a low or fluctuation mite \\  & & & water-table and low accommodation relative to peat \\  & & & \\  & & partial oxidation of plant material, which has survived & \\  & & intact and shows remnants of cellular structure & \\  & & Plant material which has survived intact following & \\  & & partial combustion in the wilderness. Shows remnants & \\  & & of cellular structure & \\  & & & \\  & Itertodetrinite & Fragmented semi-fusinite & \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Maceral groups and their origin [23]. Instead, it may contain secondary infillings of tissue cavities by humic solutions, which consequently precipitates as gels during peatification and early stages of coalification. All the analyzed samples tend to have pseudovitrite (Figures 5 and 6), which according to [26] is a sub-maceral of vitrinite [27]. Pseudovitrite is considered to be an alteration product of colloquite derived by devolatilization and desiccation or oxidation or combination of the processes [23]. Therefore, it is clear that pseudovitrite is known to affect the swelling properties of the coals despite the very high vitrinite content [2]. The observed vitrinite in coals is formed as an outcome of anaerobic preservation of lingo-cellulosic material in swamps. It also occurs in the shaly coal where organic and mineral matter were deposited rapidly. Vitrinite is the main component of bright coal encompassing the microlithotypes vitrinite, vitrinertite, and clarite. Figure 5: Photomicrographs of coal showing: (**A**) pseudovitrite; (**B**) vitrinite and sporinite (yellow arrows); (**C**) vitrinite, clay minerals (yellow arrows), and interdoternite (red arrow); and (**D**) quartz (red arrows) fillings in vitrinite (yellow arrows). Figure 6: Photomicrographs of coal showing: (**A**) vitrinite with clay and carbonates (red arrow); (**B**) fusinite and semi-fusinite (red arrow) with small layers of vitrinite; (**C**) semi-fusinite with dark grey vitrinite (red arrow) and cracks called pseudovitrite; and (**D**) pseudovitrite (yellow arrows) in light grey collotilinite.