The Canadian gold mining company Agnico Eagle Mines Limited (hereafter Agnico Eagle) is actively exploring for gold and other metals in the vicinity of Barsele in the Storuman municipality, northern Sweden. The most recent version to the geological map of the project area was done in 2007 and during the exploration campaign plenty of new information and data about the surface geology have been collected. A large extent of the geological interpretations of the older map is mainly based on geophysics and a small amount of field observations. With this new data available a re-evaluation of the surface geology of the project area was necessary.

The in-data that was used for the project were retrieved from the company and included infield outcrop observations, bottom till drill data, geochemical analysis, geophysical and structural measurements.  The project has been performed by analysing the available bedrock data together with geophysical and structural measurements. Based upon this data a new interpretation of the geology has been made, with additions and modifications to previous geological borders where possible. These changes have later been digitized in the geographical information system (GIS) software ArcMap.

The resulting updated geological map has been evaluated and compared with the previous version. The results show that a significant amount of what has previously been interpreted as metasedimentary rocks now can be classified as mafic metavolcanic rocks instead. Felsic metavolcanic rocks that might be of interest are more frequent than previously thought. The data also confirms the geological interpretations of the previous map in several areas, proving that the accuracy of the map in these areas is of good quality.