Browsing Institutt for geofag by Author "Friis, Henrik"
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Sunde, Øyvind; Friis, Henrik; Andersen, Tom; Trumbull, Robert; Wiedenbeck, Michael; Lyckberg, Peter; Agostini, Samuele; Casey, William H.; Yu, Ping (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)The boron isotopic composition of tourmaline and hambergite (Be2BO3[OH,F]) from peraluminous (n = 12), peralkaline (n = 1), and peralkaline nepheline syenite (n = 16) pegmatites has been measured by secondary ion mass ...
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Holtstam, Dan; Langhof, Jörgen; Friis, Henrik; Karlsson, Andreas; Erambert, Muriel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
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Gulbransen, Emil Holtung; Friis, Henrik; Dal Bo, Fabrice; Erambert, Muriel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Abstract The new mineral, illoqite-(Ce), with the ideal formula Na 2 NaBaCeZnSi 6 O 17 , has been discovered in the Taseq Slope, Ilímaussaq Alkaline Complex, Southern Greenland. Illoqite-(Ce) occurs in a hyperalkaline ...
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Pegmatites of the Larvik Plutonic Complex, Oslo Rift, Norway: field relations and characterisation Sunde, Øyvind; Friis, Henrik; Andersen, Tom (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)The Larvik Plutonic Complex (LPC) contains pegmatites with a wide array of mineral assemblages and morphological features. The pegmatites have traditionally been described as nepheline syenite and syenite pegmatites which ...
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Steffenssen, Georg; Müller, Axel; Munnik, Frans; Friis, Henrik; Erambert, Muriel; Kristoffersen, Magnus; Rosing-Schow, Nanna (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)The granitic pegmatites of Tørdal belong to the Late-Proterozoic Sveconorwegian pegmatite province of south Scandinavia. They form a cluster of about 300 bodies 20 km NW of the town Drangedal in southern Norway and have ...