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GEOREF RECORD

TEM-investigation of the sanidine/microcline transition across metamorphic zones; the K-feldspar varieties

H. U. Bambauer, C. Krause and H. Kroll
TEM-investigation of the sanidine/microcline transition across metamorphic zones; the K-feldspar varieties
European Journal of Mineralogy (February 1989) 1 (1): 47-58

Abstract

The diffusive transformation sanidine arrows left and right microcline results in transformation psuedomorphs which display a variety of K-feldspar intergrowths. Several varieties may be distinguished. From a TEM study of approx 70 samples taken across a regional metamorphic zone and a contact metamorphic aureole the K-feldspar components of the observed perthites can be classified. In order to reduce the confusion in K-feldspar definitions, an attempt is made to correlate these 'TEM varieties' with 'optical varieties' as well as 'X-ray varieties'. In addition they are compared to the K-feldspar modifications sanidine and (low) microcline. An interpretation of the different Al,Si ordering paths is given.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 1
Serial Issue: 1
Title: TEM-investigation of the sanidine/microcline transition across metamorphic zones; the K-feldspar varieties
Affiliation: Westfael. Wilhelms-Univ. Muenster, Inst. Mineral., D-4400 Munster, Federal Republic of Germany
Pages: 47-58
Published: 198902
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 43
Accession Number: 1992-059272
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
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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