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Abstract
During the past few seasons mapping of early Precambrian rocks in the Fiskenæsset region (Kalsbeek, this report), the author has noted the widespread occurrence of molybdenite in the Majorqap qava outcrop of the Fiskenæsset anorthosite complex. This outcrop lies 35 km north-east of Fiskenæsset town, north of Fiskenæsfjorden (Myers, 1973). EIsewhere in the Archaean rocks of Greenland, substantial amounts of molybdenite have only been found in supracrustal amphibolites in the Godthåb region by Kryolitselskabet Øresund A/S at Ivisartoq (Nielsen, 1973) and V.R. McGregor at Narssaq.
Highlights
During the past few seasons mapping of early Precambrian rocks in the Fiskenæsset region (Kalsbeek, this report), the author has noted the widespread occurrence of molybdenite in the Majorqap qava outcrop of the Fiskenæsset anorthosite complex
The Fiskenæsset anorthosite complex occurs as layers general1y 300 m or less thick and as small inc1usions, in both amphibolites and quartzo-feldspathic gneisses throughout the Fiskenæsset region, an area of over 3000 km2
The Majorqap qava outcrop consists of four major units which are, in primary upward succession: lower leucogabbro (50 m), gabbro (40 m), upper leucogabbro (60 m) and anorthosite (200 m)
Summary
During the past few seasons mapping of early Precambrian rocks in the Fiskenæsset region (Kalsbeek, this report), the author has noted the widespread occurrence of molybdenite in the Majorqap qava outcrop of the Fiskenæsset anorthosite complex. The Fiskenæsset anorthosite complex occurs as layers general1y 300 m or less thick and as small inc1usions, in both amphibolites and quartzo-feldspathic gneisses throughout the Fiskenæsset region, an area of over 3000 km2 The complex is a metamorphosed layered igneous intrusion containing large quantities of chromite (Ghisler & Windley, 1967) and smaller amounts of magnetite.
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