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GEOREF RECORD

Contrasting chemical compositions in associated lizardite and chrysotile in veins from Elba, Italy

Cecilia Viti and Marcello Mellini
Contrasting chemical compositions in associated lizardite and chrysotile in veins from Elba, Italy
European Journal of Mineralogy (June 1997) 9 (3): 585-596

Abstract

Serpentinitic veins in the Monte Fico quarries, Elba, are mostly formed of euhedral lizardite-1T. Studies of the specimens by TEM (after optical, IR and XRD characterization) provided evidence for the occurrence of chrysotile, polygonal serpentine and lizardite, with microstructural relations pointing to a continuous recrystallization from chrysotile to polygonal serpentine and to lizardite. Chemical data indicate the existence of a compositional gap between lizardite [mean composition (Mg (sub 2.79) Fe (super 2+) (sub 0.09 ) Fe (super 3+) (sub 0.07 ) Al (sub 0.07) )(Si (sub 1.91) Al (sub 0.09) )O (sub 5) (OH) (sub 3.90) ] and chrysotile [mean composition (Mg (sub 2.80) Fe (sub 0.11) Al (sub 0.06) )Si (sub 2.00) O (sub 5) (OH) (sub 4) ] with lizardite systematically enriched in Al and Fe with respect to the coexisting chrysotile. The two minerals should thus no longer be considered as polymorphs.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 9
Serial Issue: 3
Title: Contrasting chemical compositions in associated lizardite and chrysotile in veins from Elba, Italy
Affiliation: Dipartimento di Scienze della Terra, Siena, Italy
Pages: 585-596
Published: 199706
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 30
Accession Number: 1997-042913
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: 2 tables
N36°30'00" - N47°30'00", E06°30'00" - E19°00'00"
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 199715
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