Structural control and wall rock alteration at Killingdal Mine, central Norwegian Caledonides
Structural control and wall rock alteration at Killingdal Mine, central Norwegian Caledonides
Economic Geology and the Bulletin of the Society of Economic Geologists (October 1973) 68 (6): 859-883
- Caledonides
- chemical composition
- controls
- copper ores
- economic geology
- Europe
- genesis
- hydrothermal alteration
- hydrothermal processes
- massive
- metal ores
- metasomatism
- mineral deposits, genesis
- models
- Norway
- ore bodies
- ore deposits
- processes
- Scandinavia
- shape
- Sor-Trondelag Norway
- structural controls
- structure
- sulfides
- wall-rock alteration
- Western Europe
- central
- Killingdal Mine
- Roros District
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.
