Data for: Abiotic methane generation via CO2 hydrogenation with natural chromitite under hydrothermal conditions

Dataset of hydrothermal experiments simulating oceanic hydrothermal systems. Table 1: Experimental condision of previous works that include little Cr spinel as a starting material. Table 2: Experimental condision of previous works that include Cr spinel as a starting material. Table 3: Composition of minerals (wt. %) in stating material and run pruducts in both experiments determined with FE-EPMA. Table 4: Composition of the sampled fluids in the experiments at 300 °C, and 500 bars. Table S1: Composition of minerals (wt%) determined with SEM-EDS. Table S2: Composition of minerals (wt%) determined with SEM-EDS. Table S3: Composition of minerals (wt%) determined with SEM-EDS. Table S4: Composition of minerals (wt%) determined with SEM-EDS. Table S5: Ru content模拟海底热液系统的水热实验数据集。 表1：以少量铬尖晶石（Cr spinel）为起始原料的既往研究实验条件。 表2：以铬尖晶石（Cr spinel）为起始原料的既往研究实验条件。 表3：采用场发射电子探针显微分析仪（FE-EPMA）测得的两类实验中起始原料与实验产物的矿物成分（质量分数，wt%）。 表4：300 ℃、500巴条件下实验采集的流体成分。 补充表S1：采用扫描电子显微镜能谱仪（SEM-EDS）测得的矿物成分（质量分数，wt%）。 补充表S2：采用扫描电子显微镜能谱仪（SEM-EDS）测得的矿物成分（质量分数，wt%）。 补充表S3：采用扫描电子显微镜能谱仪（SEM-EDS）测得的矿物成分（质量分数，wt%）。 补充表S4：采用扫描电子显微镜能谱仪（SEM-EDS）测得的矿物成分（质量分数，wt%）。 补充表S5：钌（Ru）含量