FIGURE 6: a) EARTH AS PHOTOELECTROCHEMICAL CELL and b) PRELIMINARY EXPERIMENT
a) Schematic illustration of the notional photoelectrochemical cell assumed to obtain on the Hadean Earth and ocean.(cf.
Fig. 4)b) Simulation of a'natural' potential of about 600 millivolts generated across an FeS barrier which forms spontaneously upon freshly prepared silica gel by the interaction of a geochemically reasonable 10 millimoles of ferrous ions (ocean) and hydrosulfide (seepage water) (cf. Figure 14).
