(1960) reports: "The copper ores of the Mürtschenalp, Switzerland, occur in chloritic lenses in a Permian...(1991), in "Sulphosalt minerals from Lengenbach/Switzerland: a product of remobilization process during Alpine...malachite, cerussite, smithsonite, anglesite, duftite, chrysocolla and olivenite. Hall and MacKevett...(1958) reported of occurrences of cassiterite of Nord Lugulu, Kiva, Zaire, with ratios of Sn:Nb of the...study "Observations sur la pegmatite de Tshonka (Nord-Lugulu, Kivu)" reports that a pegmatite occurs as |