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Synthesis of fluorphlogopite single crystals; applications to experimental studies

Tahar Hammouda, Michel Pichavant, Pierre Barbey and Adrian J. Brearley
Synthesis of fluorphlogopite single crystals; applications to experimental studies
European Journal of Mineralogy (December 1995) 7 (6): 1381-1387

Abstract

The 1 atm batch melting technique was adapted using starting compositions with a slight excess of F, added as K (sub 2) SiF (sub 6) . The oxide-fluoride mixture was melted above the liquidus T and then cooled at the rate of a few degrees per hour between 1400 and 1300 degrees C. Large (mm to cm size), clear and detachable single crystals were obtained by adding a quench of the charge during the cooling stage. XRD, TEM and EPMA studies confirmed that the micas produced are mostly monoclinic 1M polytypes with compositions very close to end-member fluorphlogopite. Heating experiments confirm that melting of fluorphlogopite is congruent. Heating experiments and thermal analysis both indicate that the melting T of fluorphlogopite is > or = 1390 degrees C. Synthetic fluor-mica single crystals are of practical interest as analytical standards and for several applications in experimental petrology.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 7
Serial Issue: 6
Title: Synthesis of fluorphlogopite single crystals; applications to experimental studies
Affiliation: CRSCM-CNRS, Orleans, France
Pages: 1381-1387
Published: 199512
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 16
Accession Number: 1996-014811
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
Secondary Affiliation: Universite de Nancy I, FRA, FranceUniversity of New Mexico, USA, United States
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 199606
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