The texture of both leucogranitic facies is equigranular. In general both type of leucogranites are exceptionally fresh in thin sections and sericitisation of the F-feldspar or chloritisation of the biotite is very rarely observed. Garnet was only observed as an accessory phase in the tourmaline facies. This mineral is generally anhedral and sometimes grows as an interstitial phase. Biotite is very rarely observed as an accessory phase in the tourmaline facies, when the two granite types are in close contact.
Plagioclase is the most abundant mineral in both facies.
This mineral sometimes forms symplectites with K-feldspar. K-feldspar forms among the largest crystals in the leucogranites and contains all the other phases as inclusions. They are thus the last phase to crystallize. Muscovite is always present partly as large flakes, but its abundance decreases from the biotite facies to the tourmaline facies leucogranites. This mineral is evenly distributed throughout the granite and can be found as inclusions within plagioclase, quartz or K-feldspar.