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

Figure 3

Apparatus used for the greisenization experiment coupled with permeability measurement. (a) External heated pressure vessel equipped with two metering pumps used for the pore-fluid system and the permeability measurement. (b) Connection between the granite core (encapsulated in the Au jacket) and the pore-fluid system. Red arrows give the sense of fluid flow in the pore-fluid system. (c) log(NaCl/HCl) vs. log(KCl/HCl) diagram showing the stability fields of albite, muscovite, and K-feldspars under the experimental conditions used for the greisenization experiment (300°C and 300 bar). The white star indicates the composition of the starting solution used for the experiment. This diagram was established from the SUPCRTLB thermodynamic database [46, 47].

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