Fig. 12
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Composition de la cassitérite de Charrier dans le diagramme ternaire (Sn + Ti + W)–(Mn + Fe)–(Nb + Ta) (% at.), comparée à celles des granites à métaux rares de Montebras et d’Échassières. (1) représente la droite de substitution (Fe,Mn)2+ + 2(Nb,Ta)5+ ↔ 3(Sn,Ti)4+ d’après Černý et al. (1985). Les trends magmatique et hydrothermal sont d’après Tindle et Breaks (1998) et Breiter et al. (2007) ; Montebras d’après Marcoux et al. (2021), Échassières d’après Michel (2007), Puy-les-Vignes d’après Harlaux et al. (2021).
Composition of Charrier cassiterite in the ternary diagram (Sn + Ti + W)–(Mn + Fe)–(Nb + Ta) (% at.), compared with those of rare metal granites from Montebras and Échassières. (1) represents the substitution line (Fe,Mn)2+ + 2(Nb,Ta)5+ ↔ 3(Sn,Ti)4+ according to Černý et al. (1985). The magmatic and hydrothermal trends are according to Tindle and Breaks (1998) and Breiter et al. (2007): Montebras after Marcoux et al. (2021), Échassières after Michel (2007), Puy-les-Vignes after Harlaux et al. (2021).
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