Soil geochemistry of the Bleikvassli area ( Status Report No.3). Detailed investigation of the Grasvatnet area.

Abstract

A combined geological, geophysical and geochemical exploration project aimed at finding new ore reserves in the vicinity of the Bleikvassli mine, Nordland county was initiated by NGU in 1993. A number of the anomalous areas detected during this regional survey were followed up with more detailed investigations. One of these was the Grasvatnet area where detailed geological mapping revealed sulphide-impregnations with restricted thickness and extent. Deep geophysical anomalies (Transient Field EM) are connected with these minerali- sations and this report deals with the results of detailed soil sampling around the mineralisations and geophysical anomalies.