Hydrothermal alteration of basalts within the ultramafic-associated Tianxiu Vent Field, Carlsberg Ridge

Datasets related to hydrothermal alteration of basalts within the ultramafic-associated Tianxiu Vent Field, Carlsberg Ridge. Table 1: Sample location and description Table 2: Visually estimated degree of alteration Table 3: Average concentrations of each type of basalt Table 4: Calculated enrichment factors of major and trace elements in altered basalts from the Tianxiu vent field Supplementary table 1: Electron micro-probe analysis of saponite in the Type-II and Type-III basalts from the Tianxiu vent field. Supplementary table 2: Bulk rock chemical compositions of representative lithologies from the Tianxiu vent field.