Abstract
Killingdal mine occurs in metamorphosed, eugeosynclinal rocks of probable Ordovician age belonging to the Caledonides of Central Norway. The present pyritic, chalcopyrite-and sphalerite-bearing type of ores belong to the stratiform class of massive sulfide deposits.The close relationship between major and minor tectonic structures and the extremely elongated ore bodies strongly suggests a structural control. Formation of successive quartz-muscovite and chlorite alteration envelopes in the immediate wall rocks, accompanied by extensive redistribution, leaching, and introduction of elements from outside, suggests a hydrothermal metasomatic origin of the ores. The ultimate source of the ore-forming solutions is ascribed to metamorphic palingenic processes.
