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Guldgruvan Project

The 2,400 Ha Guldgruvan Project is located near the town of Los, Sweden.  The Project is accessible year-round, with robust infrastructure including paved roads, power, and skilled labour in nearby municipalities.  The Guldgruvan Project contains numerous historical workings, test pits and shallow drill holes in addition to five major mining sites which were the focus of historical production. 

The Guldgruvan land position contains the historic Los Cobalt Mine, one of the better known historic cobalt producers in the region, and is also the region where nickel was first discovered and recognized as an element in 17511.  Cobalt, copper, and nickel were mined on the property in the 1600’s to 1750’s.  In addition to these metals, gold, silver, zinc, and lead are also present in zones of mineralization.

The Geology of the Guldgruvan Project

Widespread cobalt-bearing copper and subordinate nickel-zinc-gold-silver mineralization occurs in sulphide disseminations, vein-infill, and shear zones within Proterozoic mafic and felsic metavolcanic rocks at Cobaltgruvan.  Historical cobalt-bearing occurrences define a series of parallel north-northwest trending zones of mineralization that mimic property-scale north-northwest trending structural fabric defined by geological contacts, fold axes, and faults extending for at least 6 kilometers across the claim package.  Accessory minerals including fuchsite are reminiscent of shear-related Archean orogenic vein deposits such as those found in the Abitibi Greenstone Belt, Canada.

History of the Guldgruvan District

The Guldgruvan project surrounds the group of prospects and historical mines known as the Los Cobalt Mines.  Copper was first mined from the late 1600’s from the Adolfsgruvan Mine.  Copper mining continued until 1736 when the area was stripped of its overburden exposing cobalt enriched copper and nickel sulphideds in and around Los, Sweden2.  Historical mines in the area include Jonas (or Norra), Rymningen, Gustafs, Adolfs, and Nya Lovisa.  In 1751, elemental nickel was first isolated and identified by Axel Fredrick Cronstedt making Guldgruvan and the Los cobalt mines as the worldwide type locality for nickel2.

1 Cronstedt, Axel F. (1754). “Fortsättning af rön och försök, Gjorde Med en Malm en Malm-art frän Los Kobolt Grufvor.”  Kongl. Svenska Veenskapas Academians Handlingar. 15: 38-45.

2Welin, E. (1966): Two Occurrences of Uranium in Sweden — the Los Cobalt Deposit and the Iron Ores of the Västervik Area. Geologiska Föreningen i Stockholm Förhandlingar. 87, 492 - 508

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