TY - RPRT TI - Mineralogy and chemistry of ocean floor hydrothermal precipitates from Kolbeinsey and Reykjanes Ridges near Iceland; scanning electron microscope (energy-dispersive x-ray) analysis AU - R.F. Commeau AU - Geoffrey Thompson AU - F.T. Manheim AU - John Olafsson AU - S. P. Jakobsson PY - 1989 DO - 10.3133/ofr89480 UR - https://pubs.usgs.gov/publication/ofr89480 ID - ofr89480 ER -