Bulk rock sulphur and sulphide/metal mineral chemical data from serpentinites from the Chimaera seeps, Turkey

Mineralogical and geochemical data was determined on variably serpentinized harzburgites and carbonate-veined serpentinites from the Chimaera seeps, Turkey, an active continental serpentinization system. Mineralogical descriptions are based on macroscopic observations and detailed polarization microscopy. Bulk rock sulphur contents and stable sulphur isotope compositions of sulphide and sulphate fractions were conducted by wet chemical sulphur extraction by chromium reduction under nitrogen atmosphere and subsequent isotope analyses on an isotope ratio mass spectrometer combined with an elemental analyzer. Calculated errors are from duplicate extractions and analyses. Mineral chemical data of sulphide minerals and opaque phases of the studied samples were determined by electron microprobe analyses on a JEOL 8200 Superprobe at the Freie Universität Berlin. The general analytical procedure is described in Schwarzenbach et al. (2021).