| | Conference Proceedings (Volume) | very north of Sweden. Mining operations started in 1968 and the current mining depth is 430 m. The open...copper, 51 700 tonnes of silver and 1,9 tonnes of gold. Photo: Olof Martinsson, Luleå University of Technology...Petrology of low-sulphide PGE ores of the Norilsk region ................................................Norman Pearson, Jan Kramers & Dmitry Kuzmin Orogenic gold deposits .. ................................................................... 1085 The orogenic gold mineral system . . ............................ |
|