Leaching precipitation diagram

Figure 21 Diagram of compartment model for the numerical simulation of calcic soil development. Compartments on left represent solid phases and compartments on right represent aqueous phases. Line A represents precipitation, line B represents dust influx, line C represents the transfer of components due to dissolution and precipitation, hue D represents transfer between aqueous phases, line E represents downward movement of solutes due to gravitational flow of soil water, line F represents evapotranspira-tional water loss, and line G represents leaching losses of solutes (McFadden et al, 1991) (reproduced by permission of Soil Science Society of America from Occurrence, Characteristics, and Genesis of Carbonate, Gypsum and Silica Accumulations in Soils, 1991).

Hume and Rimstidt (1992) used thermodynamic constraints to show that lung fluids should be substantially undersaturated with respect to chrysotile. Taunton et al. (2002) and Gunter and Wood (2000) used a thermodynamic phase diagram approach to model potential chemical reactions between asbestos and simplified lung fluids that might alter the asbestos to other minerals in vivo their model results suggested that silica, and possibly talc, are predicted to precipitate as chrysotile dissolves the precipitation of silica is consistent with the sihca-rich leached rind produced by the in vitro solubihty smdies discussed above. 

Figure 15.12. Schematic diagram showing inorganic chemical processes occurring at warm- and hot-water vent sites. Deeply circulating seawater is heated to 350°-400°C and reacts with crustal basalts, leaching various species into solution. The hot water rises, reaching the sea floor directly in some places and mixing first with cold, down-welling seawater in others. On mixing, iron-copper-zinc sulfide minerals and anhydrite precipitate. (From Jannasch and Mottl, 1985.)...

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