On the occurrence of scheelite in the Archaean Malene supracrustal rocks, southern West Greenland

Abstract

Scheelite in the Godthåbsfjord area (fig. 1) was found in heavy mineral concentrates from stream sediments in 1982, and in situ scheelite was discovered in 1982 on Storø in Godthåbsfjord (Appel, 1983a). During 1983 further work was carried out on the islands of Storø and Sermitsiaq in Godthåbsfjord and on the Store Malene mountain next to Nuuk (Godthåb), as aresult of which several scheelite-bearing horizons were found (Appel, 1984). During 1985 a detailed mapping programme was carried out on Store Malene by A. A. Garde. Subsequently, exposures on Store Malene as well as the island of Simiutat south of Nuuk were investigated by ultra-violet light. A similar survey has oeen carried out by Olsen (this volume) on the island of Sermitsiaq. Thc folIowing report is mainly based on field observations combined with investigation of a few thin sections. Laboratory work has been confined to X-ray identification of scheelite in four samples from Store Malene and one sample from Simiútat.