The aim of this thesis was to study fine - grained quartz - porohvritic volcanic bodies of limited extent - possible subvolcanic intrusions. The methods used were petrological examinations and geochemical interpretations. The investigations rocks are from the central part of the skellefte are district.
This study deals with the massive Elvaberget sulphide deposit, in the southern part of the central skellefte district. The ores as well as the surrounding rocks and alteration zone were studies.