Reconnaissance for noble and base metals in the Ivigtut-Kobberminebugt area, South Greenland: analytical results

In the Ivigtut-Kobberminebugt area, a Proterozoic greenstone belt unconformably overlie Archaean gneisses and greenstones. The greenstones comprise four Groups of metavolcanics and metasediments. Stratabound sulphide mineralisation occurs at several levels in the supracrustal pile. An epigenetic bornite chalcocite deposit containing discrete grains of native gold and electrum occurs in the southern part of the area. This small deposit was mined at the beginning of this century (the Josva Mine). Signs of further epigenetic mineralisation, believed to be a result of reworking of syngenetic stratabound occurrences, are evident elsewhere in the area.

This report presents, in table and map form, the analyses of rock samples collected by GGU during a reconnaissance for gold and base metals in the supracrustals of the area. Analyses for Au, As, Cu, Zn, Ba, Ag, and V are presented. The highest gold value recorded is 5 ppm.

The Ivigtut-Kobberminebugt area is considered to have a potential for noble/base metal deposits of syngenetic stratabound type or epigenetic type.