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Investigations in the Høgtuva and Sjona basement windows in Nordland County were carried out from 1980 to 1990. Detailed work including drilling on the Be-deposit at Bordvedåga was done from 1984 to 1988 by NGU in cooperation with Norsulfid A/S. The Be-deposit is located in granitic basement rocks of supposed age 1700 - 1900 M.a. The emplacement of the ore was prior to the amphibolite grade metamorphism and foliation of the basement during the Caledonian Orogeny.
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