Photomicrographs of granitic rocks from the Puy-les-Vignes deposit. (A) Microgranite dyke composed of quartz, plagioclase and muscovite showing sericitic alteration (crosspolarized transmitted light, sample PV-92-7). (B) Quartz-albite-muscovite zone within the RMG (crosspolarized transmitted light, sample PLV-02-02). (C) Albite-quartz zone within the RMG containing disseminated cassiterite (crosspolarized transmitted light, sample PLV-02-02). (D) Globular “snowball” quartz phenocryst containing poikilitic inclusions of rotated albite laths (white dashed lines) in the RMG (crosspolarized transmitted light, sample PLV-02-02). Mineral abbreviations according to the IMA.