Object Details author Garrels, Robert Minard 1916- Author Christ, Charles L (Charles Louis) Notes Based on Mineral equilibria at low temperature and pressure, by R. M. Garrels, published in 1960.

Figure 1: pE–pH diagrams of nontronite stability at 25 °C with other phases most likely to be present on Mars. Figure 2: Stability field of nontronite, aqueous Fe 3+ and ferrihydrite as a ...