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Messagerie francophoneLes Chaillats (loc 46093) et Nades (45996)
22nd Nov 2006 11:21 UTCAlain Hanson Expert
A l'occasion de l'examen d'échantillons collectés lors des travaux de mise en sécurité de la mine "Les Chaillats" il y a plus de 8 ans , j'ai trouvé plusieurs échantillons avec stannite et arsenopyrite altérées, contenant pharmacosidérite et chalcophyllite, non cités dans la liste des espèces pour ce gisement.
Par ailleurs si la localisation donnée dans la fiche gisement "Ancient tungsten mine. The galleries were driven northwards in quartz porphyry and silicified micaschists, to develop the orebodies near Les Bois Menus and Les Pierres Cassées. Located 500 m N of Les Chaillats and about 3 km south of the La Bosse crossing."est correcte, par contre la localisation administrative est fausse.
Localisation correcte loc 46093
Lieu dit : Bois du Roi
Hameau : Les Chaillats (aussi Chaillat)
Commune : Servant
Zipcode : 63560
Département : Puy de Dôme (63)
Région : Auvergne
Pays : France
La confusion vient du fait que ces travaux comme ceux de la mine de Sb voisine de Nades sont cités dans les ouvrages traitant des minéralisations de la foret des Collettes et d'Echassières
Ancient antimony mine, abandoned in 1914. Located 300 m west of Nades, about 4 km SE of Echassières.
Localisation correcte loc 45996
Lieu dit : La mine
Hameau : Nades
Commune : Nades
Zipcode : 03450
Département : Allier (03)
Région : Auvergne
Pays : France
Amicalement
Alain
22nd Nov 2006 16:30 UTCUwe Kolitsch Manager
Locality names corrected (please check).
For the first locality I have added chalcophyllite with the ref. "Alain Hanson collection".
Pharmacosiderite: Can you exclude barium-pharmacosiderite?
Stannite: How was this identified? (You need an analysis.)
22nd Nov 2006 18:59 UTCJean-Marc Johannet Manager
J'ai corrigé une des entrèes d'Uwe, ajouté les références BSS du BRGM et les coordonnées géographiques.
Merci pour la correction.
22nd Nov 2006 19:19 UTCUwe Kolitsch Manager
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