Finn forfatter "Casey, William H."

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  • Boron isotope composition of coexisting tourmaline and hambergite in alkaline and granitic pegmatites 
    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 ...
  • Niobium is highly mobile As a polyoxometalate ion during natural weathering 
    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 ...