Mineral data (SEM, electron microprobe, Raman spectroscopy) from epithermal hydrothermal alteration of the Miocene Sigri Petrified Forest and host pyroclastic rocks, western Lesbos, Greece

Mineral data are presented for 16 stratigraphically selected samples. Appendix 1: Scanning Electron Microscope (SEM)-Back Scattered Electron (BSE) images and Energy Dispersive Spectroscopy (EDS) mineral analyses of 16 samples that studied in detail and provided all the evidence for the science discussion in the paper. Appendix 2: The original RAMAN spectroscopy data that determined the silica polymorphs discussed in the paper. Appendix 3: SEM X-Ray maps of selected sites in the polished thin sections of the samples containing the best representative sites of manganese minerals Appendix 4: Electron Microprobe (EM) mineral analyses for a) better identification of the "Mn-Oxide" minerals present in the studied rocks; b) more accurate element determination of trace elements in the petrified wood sample.本数据集提供了16份经地层学筛选的样品的矿物学数据。 附录1：针对本论文中开展详细研究并为其科学论述提供全部依据的16份样品，提供扫描电子显微镜（Scanning Electron Microscope, SEM）-背散射电子（Back Scattered Electron, BSE）成像与能量色散谱（Energy Dispersive Spectroscopy, EDS）矿物分析结果。 附录2：本论文中用于确定二氧化硅同质多象变体的原始拉曼（RAMAN）光谱数据。 附录3：包含锰矿物最典型赋存位点的样品抛光薄片中选定区域的SEM X射线面扫图像。 附录4：电子探针（Electron Microprobe, EM）矿物分析结果，用于： a）更精准地识别研究岩石中赋存的"Mn-Oxide"矿物； b）更准确地测定硅化木样品中的微量元素含量。