Three sampling profiles (BA, BB, and BC) from, respectively, the A, B, and C sectors of the Çayırhan coalfield representing the working Tv and Tb splits of the Middle Miocene-age upper seam were investigated for mineralogical and elemental compositions. The Tv and Tb splits are mainly separated by a 70–100-cm thick tuffaceous clastic rock/marl parting in the study area, and the thickness of the Tv and Tb splits varies from 1.50 to 1.70 m, and 1.55 to 1.80 m, respectively. In both the Tv and Tb splits, Cr, Ge, As, and Zr are enriched, while Th and U are enriched only in the Tv split in all sampling profiles. This study indicates that the most significant difference between the Tv and Tb splits is in mineralogical composition. In contrast, zeolites (analcime and clinoptilolite) and carbonate minerals are detected as dominant to abundant phases in the Tv and Tb splits in the BA and BB profiles, while zeolite minerals are only identified as accessory phases in the BC profile. In addition, plagioclase grains are commonly identified in the BA and BB sampling profiles, whereas authigenic K-feldspars are more common in the sampling profile BC. The abundance of analcime and clinoptilolite, and their co-existence with syngenetic carbonate minerals in the BA and BB sampling profiles could imply that the alteration of volcanic inputs along with Ca-rich water influx into palaeomires seems to have resulted in favourable alkaline conditions and ion support for natural zeolite formation in the palaeomires. In contrast, the accessory presence of zeolite minerals and the common occurrence of authigenic K-feldspar grains in the sampling profile BC could imply that the semi-open hydrogeological system seems to allow transferring necessary ions for natural zeolite formation to other parts of palaeomires. Overall, the variations in mineralogical and elemental composition seem to be controlled by a combination of water chemistry and hydrogeological conditions within palaeomires and the geochemical properties of volcanic inputs into palaeomires.

分别来自Çayırhan 煤田的 A、B 和 C 扇区的三个采样剖面（BA、BB 和 BC）代表了中中新世上层煤层的工作 Tv 和 Tb 分裂，研究了矿物学和元素组成。研究区 Tv 和 Tb 分裂主要被 70 ～ 100 cm 厚的凝灰质碎屑岩/泥灰岩分隔，Tv 和 Tb 分裂的厚度分别为 1.50 ～ 1.70 m 和 1.55 ～ 1.80 m . 在 Tv 和 Tb 分裂中，Cr、Ge、As 和 Zr 富集，而 Th 和 U 仅在所有采样配置文件中的 Tv 分裂中富集。这项研究表明，Tv 和 Tb 分裂之间最显着的差异在于矿物组成。相比之下，在 BA 和 BB 剖面中，沸石（方沸石和斜发沸石）和碳酸盐矿物被检测为在 Tv 和 Tb 分裂中占主导地位的丰富相，而在 BC 剖面中仅将沸石矿物确定为辅助相。此外，斜长石颗粒通常在 BA 和 BB 采样剖面中识别，而自生钾长石在采样剖面 BC 中更常见。方沸石和斜发沸石的丰度，以及它们在 BA 和 BB 采样剖面中与同生碳酸盐矿物的共存可能意味着火山输入的改变以及富含钙的水流入古石似乎导致了有利的碱性条件和离子支持古石中天然沸石的形成。相比之下，在采样剖面 BC 中，沸石矿物的附属存在和自生钾长石颗粒的普遍存在可能意味着半开放的水文地质系统似乎允许将天然沸石形成所需的离子转移到古石的其他部分。总体而言，矿物学和元素组成的变化似乎受到古陨石内的水化学和水文地质条件以及火山输入古陨石的地球化学性质的综合控制。