par Weis, Dominique ;Dejonghe, Léon ;Herbosch, Alain
Référence Annales de la Société géologique de Belgique, 103, page (15-23)
Publication Publié, 1980
Article révisé par les pairs
Résumé : The mineralization in the igneous rock of the river La Helle, Venn-Stavelot massif, Belgium, shows in decreasing order: pyrite, chalcopyrite, rutile, molybdenite, pyrrhotite, sphalerite, sphene, galena, a bismuth telluride of the tellurobismuthite-hedleyite series, ilmenite, cobaltite, and hessite for the hypogene minerals, and goethite, malachite, covellite, chalcocite, lepidocrocite, neodigenite, and native copper for the supergene minerals. The mineralization is disseminated in the centre of the igneous rock and gradually concentrates in veins or veinlets in the enclosing rock. This feature and the mineral associations match with porphyry copper deposits. -A.-M.F.