Fjälltuna
Fjälltuna is located in Åsele Municipality, Västerbotten County, Sweden. It comprises four exploration licences for a total of 3,730 hectares.
Minerals: Au, Cu, Ag
Results: The gold anomaly found was identified via exploration drillholes, down into the surface bedrock. In the best areas, the mineralized zones contain 1.6 grams of gold/tonne over 4 metres, with a peak value of 3.6 grams of gold/tonne. The zones also contain interesting levels of copper; the same 4 metres that contain the highest levels of gold also contain 1.5% of copper and 36 grams of silver/tonne. The drilling that was concluded before Christmas indicates a mineralization in the surface rock that extends for at least 300 x 150 metres and has not yet had its lateral extent determined. Within the exploration licence, two other anomalies have also been discovered and are to be further investigated.
Planned works: For 2011, stripping in the mineralized area is planned for surveying and subsequent core drilling, as well as further exploration drilling.
Previous surveys: The initial matrix exploration activities were followed up in 2009 and 2010 partly by intensification of sampling and 205 exploration boreholes and partly in the form of extensive quaternary geological and bedrock surveys and mapping. A new exploration drilling programme to extend the scope and depth of the data was initiated at the end of September.
Method
Exploration drilling at Fjälltuna were carried out using Nordic Mines’ own drilling rig. Percussion drilling was used, with a bore diameter of 76 mm in till and 68 mm in rock. The till samples were based on 1-metre sections; the rock sample was based on drilling to a depth of 1-2 metres in rock. The sample size was 1 kg per metre in both till and rock.
The samples were prepared for analysis and analyzed at Pioneer Laboratories (non-accredited lab). Sample preparation and analysis at Pioneer: Multi-element ICP analysis, 0.500 g of the sample was dissolved in 3 ml of aqua regia, diluted with 10 ml of water. The gold assay was conducted with 20 grams of sample, dissolved in aqua regia, MIBK extracted, and analyzed by atomic adsorption.
