Niels Viggo Ussing
Niels Viggo Ussing (14 June 1864 – 23 July 1911), Professor of Mineralogy, University of Copenhagen, Denmark. The mineral ussingite is named after this Professor.
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Wikipedia
Niels Viggo Ussing (14 June 1864 – 23 July 1911), Professor of Mineralogy, University of Copenhagen, Denmark. The mineral ussingite is named after this Professor.