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Compositional controls on the a and b cell dimensions of 2M1 muscovite

Charles V. Guidotti, F. P. Sassi and James G. Blencoe
Compositional controls on the a and b cell dimensions of 2M1 muscovite
European Journal of Mineralogy (February 1989) 1 (1): 71-84

Abstract

Chemical and XRD data for 2M (sub 1) muscovites have been evaluated with the aim of quantifying the changes in a and b that occur with substitution of Mg, Fe (super 2+) and Fe (super 3+) for Al (super vi) . Examination of old (63 muscovites) and newly acquired (79 muscovites) data for both natural and synthetic 2M (sub 1) muscovites reveals that a and b decrease with increasing Na/(Na + K) ratio. However, the effect of Na right and left arrows K substitution becomes important only when Na/(Na + K) exceeds 15 mole %. Diagrams and regression equations for Na/(Na + K) <= 0.15 indicate that a and b vary linearly with Sigma(Mg + Fe (super 2+) + Fe (super 3+) ), Sigma(Al (super iv) + Al (super vi) ), and Si. Data are presented.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 1
Serial Issue: 1
Title: Compositional controls on the a and b cell dimensions of 2M1 muscovite
Affiliation: Univ. Maine, Dep. Geol. Sci., Orono, ME 04469, United States
Pages: 71-84
Published: 198902
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 56
Accession Number: 1992-059274
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: 4 tables
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 1992
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