The zinc spinel, gahnite, has previously been reported, briefly, from only one locality in Norway, the pegmatite at Thors gruve, Øvre Vats, near Haugesund, (Sørbye, 1950). The mineral has now been found in the Palæozoic pyritic lead-zinc ore at Bleikvassli in Nordland. The following note presents a description of the occurrence of the mineral, its physical properties and a complete chemical analysis.
Contributions to the mineralogy of Norway. No. 15. Gahnite in the Bleikvassli ore.