Dynamic Permeability Related to Greisenization Reactions in Sn-W Ore Deposits: Quantitative Petrophysical and Experimental Evidence

Figure 8

Evolution of permeability over time during the greisenization experiment. This time evolution depicts cycles of permeability increase followed by stages of gradual decrease that may, respectively, be attributed to porosity generation during the replacement reactions and sealing by closing of the neoformed pathways. The stages of permeability decrease fit with exponential functions commonly observed in experimental studies.