It is anticipated that the ocean geothermal system will be able to collect significant metals and minerals because seafloor hydrothermal fluids are particularly rich in metals and minerals, which vary depending on the location and circumstances of the resources (Tivey, 2007; Koski), and the supercritical temperature of the ocean geothermal brine renders it particularly effective at leaching such metals and minerals out of the rock.  The proposed ocean geothermal system will remove metals and [...]

http://worthingtonsawtelle.com/the-recent-mind-bogglingly-stupid-arguments-against-fuel-cell-vehicles/#comments Jim Shnell responded: We agree about the need for “MASSIVE amounts of electrolytic hydrogen.” It is not only possible, it is the almost unavoidable result of using geothermal energy from the rift zones in the ocean floors. The rift zones create supercritical, and therefore highly efficient, resources, and can generate electricity cheaper than fossil fuels. The same supercritical properties enable more efficient electrolysers, compounding the efficiency of the supercritical generators to which they [...]