Multistage development of a hydrothermal W deposit during the Variscan late-orogenic evolution: the Puy-les-Vignes breccia pipe (Massif Central, France)

Special Issue Minéralisations périgranitiques

Open Access

Fig. 14

(A) Backscattered electron images of columbite-tantalite disseminated in the Puy-les-Vignes RMG. (B) Chemical compositions of columbite-tantalite plotted in the Ta/(Ta + Nb) vs. Mn/(Fe + Mn) diagram.

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