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

Figure 11

(a) Relationship between matrix density and connected porosity deduced from measurements performed on the Panasqueira granite-greisen samples. (b) Relationship between connected porosity and permeability deduced from granite greisen samples in which porosity and permeability were measured. Black and white dots correspond, respectively, to permeability values obtained at 25°C and 400°C. The dashed line corresponds to modeled evolutions of permeability as a function of rock porosity using power law equations (see text for explanations).

(a)

(b)