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Rock composition, density and a variation diagram

Published online by Cambridge University Press:  01 May 2009

W. J. French
W. J. French*
Affiliation:
Department of Geology, Queen Mary College, Mile End Road, London E1 4NS
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Summary

The relationship between silicate rock density and composition has been investigated and empirical formulae have been obtained that give a factor equivalent to a ‘normative’ density. Comparison between this factor and measured density may provide useful diagrams assisting the interpretation of metamorphic petrogenesis. The factor itself is a viable differentiation index aiding comparison between the compositions and liquidus temperatures of volcanic suites.

Type
Research Article
Information
Geological Magazine , Volume 113 , Issue 4 , July 1976 , pp. 371 - 376
Copyright
Copyright © Cambridge University Press 1976

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