GJUVE-DALEN & NORE
- The Gjuve-Dalen and Nore prospect are key areas within the underexplored, copper-rich Telemark supracrustals metallogenic province.
- The province contains hundreds of small historic mines and workings, the vast majority of which were only worked superficially.
- Historically, the mains targets were vein-hosted copper, gold and silver. Other deposits types in the region are known to be present, but under-investigated.
- A mineral systems approach and modern geophysics may reveal significant deposits within the area.
- At Gjuve-Dalen disseminated native copper and silver occur as do disseminated and vein-hosted sulphide Cu-Ag-Au. Vanadium mineralization is also associated with these deposits.
- At Nore copper, gold, silver, molybdenum, tungsten, vanadium and uranium occur. Documented copper grades from vein hosted deposits reach 30% Cu. Disseminated, stratiform mineralization of copper, uranium, and molybdenum remain uninvestigated and are a primary target for further investigation. Mineralization could achieve a strike length of up to 2km.
- Both project areas lie within the Neoproterozoic (ca. 1.15 Ga) Telemark supracrustals of the Sveconorwegian Telemarkia terrane.
- Lithologies in both project areas are dominated by bimodal volcanics and sediments deposited in what is believed to be a 300 km wide "Basin and Range" type setting.
- At Gjuve-Dalen the native copper and silver are found intermittently for 2km within a quartzite, just below its contact with an overlying metabasalt and atop an amygdular metabasalt. The formations form a large anticlinal fold that is fractured and deformed. Sulfide mineralization occurs within fracture zones. Clear indications of lateration, mineralized fluids, the presence favorable fluid flow paths, evidence of redox and physical trapping mechanisms, and very strong magnetic anomalies (ca. 8000 nT peak to peak) at the fractured core of the anticline indicate that area warrants further geological and geophysical investigation.
- In the Nore area a large scale (80 km long) synclinal fold hosts hydrothermal vein deposits on both flanks. The Metamorphic claim area lies on the east flank of this syncline. Here, historic mines worked veins within a greenstone-hosted rhyolitic unit with grades of up to 30% Cu. Adjacent, under-investigated stratiform copper-uranium mineralization indicates that redox trapping mechanisms have been active in the project area.