Fig. 11

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Faciès de l’apatite. (a) Cristaux d’apatite magmatique avec topaze dans le leucogranite albitique (image MEB, électrons rétrodiffusés) ; (b) Apatite hydrothermale liasique avec fluorine imprégnant le leucogranite (avec topaze résiduelle) ; (c) Apatite hydrothermale liasique en cristaux automorphes violets (1 cm pour le plus grand cristal au centre) tapissant une diaclase du leucogranite albitique.

Apatite habits. (a) Magmatic apatite crystals with topaz within albitic leucogranite (MEB, backscattered electrons); (b) Liasic hydrothermal apatite with fluorite permeating albitic leucogranite (with residual topaz); (c) Purple automorphic crystals (1 cm for the biggest crystal in the center) of liasic hydrothermal apatite coating a leucogranite diaclase.

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