Elemental mapping data of the hydrothermal ferromanganese oxides obtained from a petit-spot volcano

The dataset consists of elemental mapping data of hydrothermal ferromanganese oxides (D05-20 and D05-21) obtained from a petit-spot volcano in the western North Pacific Ocean. The elemental mapping of Al, Ca, Cu, Fe, K, Mg, Mn, Ni, Rb, S, Si, and Zn was performed on polished cross sections of the samples using micro-XRF (XGT7000V, Horiba, Kyoto, Japan) with energy-dispersive X-ray spectroscopy at Kyoto University. The analysis was repeated 15 times at a tube voltage of 50 kV, a tube current of 0.9 A, and an X-ray beam diameter of 100 µm. Scanning was performed in ~75 µm intervals (pixel size) at a rate of 9 ms/pixel. The intensity was determined as the cumulative intensity of the 15 analyses (total analysis time = 135 ms/pixel).本数据集包含采集自西北太平洋小热点火山的热液铁锰氧化物样品（D05-20与D05-21）的元素成像数据。研究采用显微X射线荧光光谱（micro-XRF，型号XGT7000V，堀场公司，日本京都）结合能量色散X射线能谱，于京都大学对样品的抛光横截面完成了Al、Ca、Cu、Fe、K、Mg、Mn、Ni、Rb、S、Si及Zn的元素成像分析。本次分析设置管电压50 kV、管电流0.9 A、X射线束直径100 µm的实验条件，每个扫描点位重复分析15次；扫描步长约75 µm（对应像素尺寸），扫描速率为9 ms/像素，最终元素信号强度以15次分析的累积强度计算，单像素总分析时长为135 ms。