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Envoyé par Jean-Marie LAURENT  
Jean-Marie LAURENT Wednesday 22 November 2006 10:27
Bonjour à tous.
J'ai mis 2 photos dans la rubrique " identity help "
Il s'agit d'un micro échantillon de scories de Pouallouen ( 29 )

Excellente journée à tous.
Uwe Kolitsch Wednesday 22 November 2006 16:07
Could be an Fe sulphate. (Or some chloride.)
Jean-Marie LAURENT Thursday 23 November 2006 06:58
Many thanks Uwe...
Fe sulphate...have you any idea ? Halotrichite may be...
Jean-Marie LAURENT Thursday 23 November 2006 07:03
may be too MELANTERITE ?
Remy Philippe Saturday 25 November 2006 10:41

assez classique dans les scories de surface de Poullaouen : gypse tardif ( le gypse "primaire" est en beaux cristaux incolores.
Pierre Le Roch Tuesday 28 November 2006 09:26
D'accord avec Philippe
gypse très récent;pour ceux qui ont ramené des marcasites de Plumelin et qui les ont "oubliéés" dans la cave , elles en sont maintenant couvertes..
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