Fig. 11From: Formation of phyllosilicates in a fault zone affecting deeply buried arkosic sandstones: their influence on petrophysic properties (Annot sandstones, French external Alps)Al2O3–K2O–FeO + MgO ternary plot of white mica compositions. End-members compositions have also been reported. Prl pyrophyllite, Ms muscovite, Cel celadonite. Grey points detrital white mica; dark points newly-formed white mica, TK Tschermak substitution, P pyrophyllitic substitutionBack to article page