Figure F12. Photographs of microbiological colonization and growth experiments prepared for deployment during Expedition 327. A. Assembled FLOCS colonization experiment for MBIO OsmoSampler package, containing cassettes with a mixture of basalt, sulfide minerals, glass beads, glass wool, and polished mineral chips. B. Assembled FLOCS colonization experiment for enrichment OsmoSampler package. C. FLOCS experiment during deployment of MBIO OsmoSampler package. D. Close-up of polished mineral chips deployed in FLOCS experiments. Mineral chips are, from left to right, glassy basalt from the East Pacific Rise, basalt collected from Hole U1301B during Expedition 327, chalcopyrite, pyrite, pyrrhotite and/or magnetite (last four purchased from Wards Geology). E. FLOCS experiment housed within a modified coupler in enrichment OsmoSampler. Y-union at left connects the FLOCS inflow with the 13C-labeled bicarbonate solution, as discussed in text.
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