Ramberget, Hestmona Island (Hestmannøy; Hestmandö), Rødøy, Nordland, Norway
Chromite ore
Note on donathite:
Donath (1931)reported a zinc-rich chromite from Ramberget and from Værnesfjell, and published 2 analysis. Later Seeliger and Mücke (I969), on the basis of the original analyses and XRD analyses found that this is not a Zn-rich chromite, but a tetragonal mineral, and described this as a new mineral, Donathite. Moore (1977) reinvestigated the mineral but failed to reveal the presence of zinc in amounts greater than traces(approximately o. 3 % ZnO). Analyses of a sample of the original material described by Donath (193I) also gave similar results. Later Burns et al.(1997)showed it to be a mixture of 2 spinel minerals and descredited donathite as a mineral species.
References
- Donath, M. (1931): Zinc-bearing chromite. American Mineralogist. 16, 484-7.
- Seeliger, E. and Mücke, A. (I969): Donathit, ein tetragonaler, Zn-reicher Mischcristall von Magnetit und Chromit. Neues Jahrbuch für Mineralogie. Monatsheft, 1969, 49-57
- Moore, A.C. (1977): Zinc-Bearing Chromite (donathite?) from Norway: A Second Look. Mineralogical Magazine, 41: 351-355
- Burns, P.C., Hawthorne, F.C., Libowitzky, E., Bordes, N. and Ewing, R.C. (1997): Donathite descredited. a mixture of two spinels. Neues Jahrbuch für Mineralogie. Monatsheft, 1997 (4): 163-174
Mineral List
2 entries listed. 1 valid mineral.
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