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Mackinawite, pentlandite, and native copper from the Newport pallasite1

Published online by Cambridge University Press:  14 March 2018

Peter R. Buseck
Peter R. Buseck*
Affiliation:
Departments of Geology and Chemistry, Arizona State University, Tempe, Arizona 85281
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Summary

These minerals indicate strongly reducing conditions as well as extremely low sulphur fugacities within the Newport pallasite. They all formed at low temperatures (upper limit 580° C) and in the solid state. This is the first reported occurrence of mackinawite and pentlandite from a pallasitic meteorite; Cu is known from only one other pallasite. Microprobe analyses of a large Cu grain indicate its composition as 98·6 ± 0·5 %, Ni 2·0 ± 0·5, Fe below the limit of detection (∼0.3).

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 36 , Issue 281 , March 1968 , pp. 717 - 725
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1968

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Footnotes

1

Contribution No. 30 from the Center for Meteorite Studies, Arizona State University.

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