Contributions to Mineralogy and Petrology

, Volume 60, Issue 2, pp 209–217

Blaubleibender covellite and its relationship to normal covellite

  • A. Putnis
  • J. Grace
  • W. E. Cameron
Article

DOI: 10.1007/BF00372282

Cite this article as:
Putnis, A., Grace, J. & Cameron, W.E. Contr. Mineral. and Petrol. (1977) 60: 209. doi:10.1007/BF00372282

Abstract

Both natural and synthetic samples of blaubleibender (blue-remaining) covellite have been studied by reflected light microscopy, electron probe microanalysis and electron microscopy and diffraction. The natural sample of composition Cu1.20S has a √19a × √19a superstructure based on the hexagonal coveilite subcell (side a). The synthetic sample of composition Cu1.10S has a 2√7 a × 2 √7a superstructure. In both cases the phases are homogeneous. The evidence suggests that the recognition of two distinct types of blaubleibender covellite may be an oversimplification, and that a series of metastable superstructures based on the covellite structure may exist.

Copyright information

© Springer-Verlag 1977

Authors and Affiliations

  • A. Putnis
    • 1
  • J. Grace
    • 2
  • W. E. Cameron
    • 1
  1. 1.Department of Mineralogy and PetrologyUniversity of CambridgeCambridgeEngland
  2. 2.Department of GeologyWestern Michigan UniversityKalamazooUSA

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