TY JOUR TI Hydrothermal ore manifestations of Logachev and Rainbow fields Mid-Atlantic Ridge -- a new type of ocean rift hydrothermal deposits KW hydrothermal deposits KW Logachev and Rainbow fields KW Mid-Atlantic Ridge KW serpentinites. JO Russian Journal of Earth Sciences AU Bogdanov, Y.A. AU Bortnikov, N.S. AU Gurvich, Y.G. AU Lein, A.Y. AU Sagalevich, A.M. AU Vikent'ev, I.V. AU Novikov, G.V. AU Peresypkin, V.I. PY 2001 IS 2 PB Geophysical Center of the Russian Academy of Sciences