Mineralogy of cold seep sediment inhabited by vesicomyid clams in the Japan Deep Sea Trench

Sediment sampling was performed at the center of the clam colony. Immediately after sample recovery onboard, the sediment core was sub-sampled and preserved for later analyses. Pyrite and carbonate content of the sediment was measured by X-ray refraction analysis as previously described (Ertefai et al., 2010).