Sapphirine and kornerupine occurrences within the Fiskenæsset complex

Abstract

Detailed mapping and laboratory studies have been undertaken on rock and mineral associations of the rare magnesium aluminium silicates sapphirine and kornerupine. Their type locality in the southern harbour at Fiskenæsset town was discovered by K. L. Giesecke in 1809 (see Bøggild (1953) for a summary of early investigations). Prior to mapping by GGU and Platinomino A/S geologists in 1970 and 1971, seven localities for sapphirine had been localised within the Fiskenæsset complex (Herd et al., 1969); new discoveries of sapphirine, kornerupine, and (often associated) ruby corundum, have increased the number of known localities to approximately forty.