Figure 2From: Formation of H2 and CH4by weathering of olivine at temperatures between 30 and 70°CESEM pictures showing water influence on olivine surfaces before and after incubation. An initial olivine grain surface (A) is relatively "clean" from pit marks, etching and precipitates compared with the incubated grains which show a slight increase in small crystal precipitates on the surface (B) and pit marks (C).Back to article page