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Amphibole compositional space

Published online by Cambridge University Press:  14 March 2018

R. Phillips
R. Phillips*
Affiliation:
Departmeut of Geology, University of Durham
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Summary

The basic formula of an amphibole is completely defined by stating the number of sodium atoms in X positions and the numbers of aluminium atoms in Y and Z. These three numbers are coordinates in a compositional space that can easily be represented. The alkali amphiboles are re-defined as having at least one atom of sodium in X in the basic formula unit. A systematic nomenclature for the calciferous and alkali amphiboles is suggested using existing end-member names.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 35 , Issue 275 , September 1966 , pp. 945 - 952
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1966

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References

Phillips, (R.), 1963. Min. Mag., vol. 33, p. 701.Google Scholar
Phillips, (R.) and Layton, (W.), 1964. Ibid., p. 1097.CrossRefGoogle Scholar