Photomicrographs of (A–B) micaschist PG21-04: (A) in cross-polarised light (XPL), showing a pseudomorph, presumably after cordierite; (B) andalusite occurrence parallel to the main foliation. (C) Bt–Sil paragneiss PG20-01 in plane-polarised light (PPL), showing replacement of sillimanite by muscovite. (D) Grt–Bt paragneiss in PPL, showing garnets with inclusion-rich cores oriented along foliation. (E) Bt–Sil metatexitic paragneiss PG20-02, exhibiting a pseudomorphed crystal (probably Crd) replaced by sillimanite + muscovite. (F) Crd–bearing diatexite sample PG20-04, showing poikiloblastic texture of K-feldspar enclosing plagioclase crystals. Note white arrows indicating interconnected interstitial quartz, plagioclase with limpid rims, and resorbed plagioclase. (G) Claveix granite showing porphyritic texture with globular, corroded quartz. (H) Gelles granite in XPL, showing coarse-grained matrix texture.