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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 ...
  • Friis, Henrik; Casey, William H. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Niobium is usually considered to be one of the least mobile elements during alteration of rocks in geological processes and is thought to only be mobile at elevated temperatures and/or pressures. Since niobium is assumed ...