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Fig. 2

Fig. 2 Refer to the following caption and surrounding text.

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A- field Quartz veins from the MBM (photo Y. Rolland), B- geodic quartz, C-sealed and unsealed quartz veins, D- thin sections of quartz fibers of an unsealed vein, E and F- microstructures in quartz grains of sealed veins of the MBM; G and H sealed quartz veins in basalts and sandstones form the CM; I and J- primary and secondary Fluides Inclusions (FIs) in quartz from the MBM; K- primary FIs in quartz veins from the CM.

A- Veine de quartz du MBM, B : quartz géodique, C- veines de quartz cimentées et non cimentées, D - lame mince montrant des fibres de quartz dans une veine non cimentée, E et F -microstructures dans les grains de quartz des veines cimentées du MBM; G et H - veines de quartz cimentées dans les basaltes et les grès du CM; I et J-Inclusions Fluide (IFs) primaires et secondaires dans le quartz du MBM; K- IFs primaires dans les veines de quartz du CM.

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