Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-20T03:37:54.073Z Has data issue: false hasContentIssue false
  • English
  • Français

Zinc-bearing chromite (donathite?) from Norway: a second look

Published online by Cambridge University Press:  05 July 2018

Alan C. Moore
Alan C. Moore*
Affiliation:
Mineralogisk-Geologisk Museum, Sars Gate 1, Oslo 5, Norway
Get access Rights & Permissions [Opens in a new window]

Summary

Electron-microprobe analyses of chromites from the Helgeland area, Norway, show that they are all low in zinc. Many chromites show physical properties identical with donathite (anisotropism; polar magnetism) but have cubic lattices. One exception, from Rødøya, shows an unusual deviation from cubic symmetry and that there may exist complex intergrowths of two different tetragonal lattices and a cubic lattice. The similarity between the chromites studied and donathite suggests that the chemistry and crystallography of that mineral may be more complex than is currently accepted.

Type
Research Article
Information
Mineralogical Magazine , Volume 41 , Issue 319 , September 1977 , pp. 351 - 355
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1977

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

1

Present address: Dept. of Geology, University of Cape Town, Rondebosch 7700, South Africa.

References

Bence, (A. E.) and Albee, (A. L.), 1968. J. Geol. 76, 382–403.CrossRefGoogle Scholar
Blanc, (Y.) and Maisonncuve, (J.), 1973. Bull. Soc.fr. Mineral. Cristallogr. 96, 320–1.Google Scholar
Donath, (M.), 1931. Am. Mineral. 16, 484–7.Google Scholar
Evans, (B. W.) and Frost, (B. R.). 1975. Geochim. Cosmochim. Ada, 39, 959–72.CrossRefGoogle Scholar
Fleischer, (M.), 1969. Am. Mineral. 54, 1217-8.Google Scholar
Goles, (G. G.), 1967. In Wyllie, P. J. (ed.), Ultramafic and Related Rocks, Wiley, N.Y. 352-62.Google Scholar
Jenness, (S. E.), 1959. Econ. Geol. 54, 1298-1301.CrossRefGoogle Scholar
Klemm, (D. D.), 1962. Neues Jahrb. Mineral., Abh. 97, 337–56.Google Scholar
Pearre, (N. C.) and Heyl, (A. V.), 1960. U.S. Geol. Surv. Bull. 1082-K, 707-29.Google Scholar
Robbins, (M.), Wertheim, (G. K.), Sherwood, (R. C), and Buchanan, (D. N. E.), 1971. J. Phys. Chem. Solids, 32, 717-29.CrossRefGoogle Scholar
Schmidbauer, (E.), 1971. Ibid. 71-6.CrossRefGoogle Scholar
Seeliger, (E.) and Miicke, (A.), 1969. Neues Jahrb. Mineral. Monatsh. 49-57.Google Scholar
Thayer, (T. P.), Milton, (C), Dinnin, (J.), and Rose, (H.), 1964. Am. Mineral. 49, 1178-83.Google Scholar
Vahatalo, (V. O.), 1953. Bull. Comm. Geol. Finland, 164.Google Scholar
Weiser, (T.), 1967. Neues Jahrb. Mineral., Monatsh. 234, 43.Google Scholar