Tungsten mineralisation in Archaean supracrustal rocks at Sermitsiaq, southern West Greenland

Abstract

The purpose of the field work was detailed mapping of the eastern part of the island Sermitsiaq in outer Godthåbsfjord, with special reference to its tungsten mineralisation (Appel, 1983). During six weeks in the summer of 1985 a geological map was made using enlarged aerial photographs at scale 1:10 000, and scheelite showings were localised with ultra-violet lamps at night (fig. 1). Thefollowing report is based on field observations and X-ray determination of scheelite in four rock samples.