Fig. 8
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Diagramme binaire Ta / (Ta + Nb)-Mn / (Mn + Fe) (% at.) montrant la composition des colombo-tantalites (colombo-tantalites disséminées dans le leucogranite d’après Belkasmi et Cuney, 1998).
Ta/(Ta+Nb)-Mn/(Mn+Fe) binary diagram showing columbite-tantalite compositions (disseminated colombo-tantalites from Belkasmi and Cuney, 1998).
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