Skip to main content Accessibility help
×
×
Home

Evidence for hibbingite–kempite solid solution

  • Bernhardt Saini-Eidukat (a1), Nikolai S. Rudashevsky (a2) and Alexander G. Polozov (a3)

Abstract

New occurrences of hibbingite, γ-Fe2(OH)3Cl, have been found associated with platinum-group minerals in the Noril'sk Complex, and with the Korshunovskoye iron ores of the southern Siberian platform. The Norils'k grains, which are up to 0. 6 mm in diameter, are associated with the platinumgroup minerals froodite, cabriite, urvantsevite and with native silver in massive pentlandite–cubanite– chalcopyrite ore. The Korshunovskoye iron ore sample in which hibbingite was found is composed of fine-grained magnetite ore associated with halite. Hibbingite, hematite and silver grains are found in cavities in halite; the reddish-brown hibbingite grains usually occur as encrustations in the cavities. The size of hibbingite and hematite grains is up to 100 µm.

Hibbingite from the Noril'sk Complex contains a significant kempite (Mn2(OH)3Cl) component; in some cases it contains over 50 mol. % Mn. These data suggest that at least a partial solid solution series exists between hibbingite and kempite. All known occurrences of hibbingite represent paragenetically late mineral assemblages. In the case of the Korshunovskoye deposits, the occurrences are associated with highly concentrated hydrothermal brines derived from the Lower Paleozoic saline sediments of the Siberian Platform cover.

Copyright

References

Hide All
Buchwald, V.F. and Koch, C.B. (1995) Hibbingite (γ-Fe2Cl(OH)3Cl), a chlorine-rich corrosion product in meteorites and ancient iron objects. Meteoritics, 30, 493.
Dahlberg, E.H. (1987) Drill core evaluation for platinum group mineral potential of the basal zone of the Duluth Complex. Minnesota Dept. Natural Res. Rep., 255.
Dahlberg, E.H. and Saini-Eidukat, B. (1991) A chlorinebearing phase in drill core of serpentinized troctolitic rocks of the Duluth Complex, Minnesota. Canad. Mineral., 29, 239–44.
Dunayev, V.A. (1986) Structure and origin of the ore bodies of the Korshunovo iron ore deposit. Intl. Geol. Rev., 28, 1468–79.
Laverat, A.G., Martínez, O.G., Ruiz, J.C. and Ros, E.G. (1973) Hydroxy salts. XII. Hydroxychlorides of iron (II), manganese(II) and other heavy cations. Anales de Quimica, 69, 331–7.
Malinko, S.V., Lisitsyn, A.Ye., Purusova, S.P., Fitsev, B.P. and Khruleva, T.A. (1983) Korshunovskite Mg2Cl(OH)3-nH2O — a new hydrous magnesium chloride. Intl. Geol. Rev., 25, 1105–10.
Miura, Y., Rucklidge, J.C. and Nord, G.L. Jr., (1981) The occurrence of chlorine in serpentine minerals. Contrib. Mineral. Petrol., 76, 1723.
Palache, C., Berman, H., and Frondel, C. (1951) Dana's System of Mineralogy, 7th edn, Vol II. Wiley, New York.
Polozov, A.G., Vorontsov, A.E. and Amirzhanov, A.A. (1995) The latest process of mineragenesis in iron ore deposits of the Angara-Ilim type, Siberian Platform. Proc. IGCP Proj. 336 Intl. Field Conf. and Symp., Duluth, MN, 151.
Post, J.E. and Buchwald, V.F. (1991) Crystal structure refinement of akagenéite. Amer. Mineral., 76, 272–7.
Rucklidge, J.C. and Patterson, G.C. (1977) The role of chlorine in serpentinization. Contrib. Mineral. Petrol., 65, 3944.
Saini-Eidukat, B., Kucha, H. and Keppler, H. (1994) Hibbingite, γ-Fe2(OH)3Cl, a new mineral from the Duluth Complex, Minnesota, with implications for the oxidation of Fe-bearing compounds and the transport of metals. Amer. Mineral., 79, 555–61.
Springer, G. (1989) Chlorine-bearing and other uncommon minerals in the Strathcona Deep copper zone, Sudbury District, Ontario. Canad. Mineral., 27, 311–3.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Mineralogical Magazine
  • ISSN: 0026-461X
  • EISSN: 1471-8022
  • URL: /core/journals/mineralogical-magazine
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed