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Hello Everyone, I noticed in some papers on granulites that the tables of chemical composition of biotite do not contain fluorine (F), is it because its not possible to analyse fluorine in biotite (?), if we can analyse it, could someone tell me how? I would appreciate if you could help me also with the relevant references on the effect of fluorine on biotite stability at high metamorphic grade? Many thanks in advance for your help. Sara ===== ___________________________________________________________ Do You Yahoo!? Votre e-mail @yahoo.fr gratuit sur http://courrier.yahoo.fr %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%