Figure 2From: Transport of Pb and Zn by carboxylate complexes in basinal ore fluids and related petroleum-field brines at 100 °C: the influence of pH and oxygen fugacityTotal ppm Pb isopleths in log –pH space for the model composite ore-brine at 100°C. Neutral pH, log –pH conditions for the model ore fluids, regions of mineral stability, and regions of dominance for sulfur species are the same as illustrated in Fig. 1. The small arrows indicate the direction of increasing concentration.Back to article page