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GEOREF RECORD

First find of ferropseudobrookite in quartz from Napier Complex, East Antarctica

Akira Miyake and Tomokazu Hokada
First find of ferropseudobrookite in quartz from Napier Complex, East Antarctica
European Journal of Mineralogy (January 2013) 25 (1): 33-38

Abstract

Ferropseudobrookite exsolution rods, approximately Mg (super 2+) (sub 0.11) Fe (super 2+) (sub 0.70) Al (super 3+) (sub 0.04) Fe (super 3+) (sub 0.34) Ti (super 4+) (sub 1.81) O (sub 5) , space group Cmcm with a about 0.98 nm, b about 0.37 nm, c about 1.00 nm, are first reported in quartz from a garnet-orthopyroxene-bearing quartzofeldspathic gneiss, Napier Complex, East Antarctica. The elongated direction of ferropseudobrookite rods is the b axis and is parallel to either the <101> or <111> of low-quartz. Moreover these rods have almost six-fold symmetry along the c axis of quartz. The formation of the exsolution must result from the cooling of the gneiss and the exsolution took place in the high-quartz field. The present exsolution phenomenon suggests that quartz can dissolve not only Ti but also Fe (super 2+) and Fe (super 3+) and that the gneiss contains Fe (super 2+) ion under the ultrahigh-temperature peak metamorphic conditions.


ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 25
Serial Issue: 1
Title: First find of ferropseudobrookite in quartz from Napier Complex, East Antarctica
Affiliation: Kyoto University, Department of Geology and Mineralogy, Kyoto, Japan
Pages: 33-38
Published: 201301
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Germany
References: 19
Accession Number: 2013-034980
Categories: Mineralogy of non-silicatesIgneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
S66°30'00" - S66°30'00", E53°40'00" - E53°40'00"
Secondary Affiliation: National Institute of Polar Research, JPN, Japan
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Schweizerbart'sche Verlagsbuchhandlung. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201322
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