MINERALOGY AND CHEMISTRY OF ASBESTOS FROM HOLENARASIPUR SCHIST BELT : MANGALAPUR AREA

MINERALOGY AND CHEMISTRY OF ASBESTOS FROM HOLENARASIPUR SCHIST BELT : MANGALAPUR AREA

Asbestos from the Mangalapur area of Holenarasipur Schist belt has been identified as anthophyllite contrary to the earlier report as tremolite. The serpentines in this area are 6-layer orthoantigorites and the chlorites are 14 Å, IIb polytypes of variable Si/Al ratios. The anthophyllite is derived...

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Veröffentlicht in:Current science (Bangalore) 1974-01, Vol.43 (13), p.402-405
Hauptverfasser: IYER, G. V. ANANTHA, KUTTY, T. R. NARAYANAN, RAGHAVENDRA, R. V.
Format: Artikel
Sprache:eng
Schlagworte:
Asbestos
Atoms
Chemical composition
Magnesite
Metamorphism
Mineralogy
Minerals
Rocks
Schist
Serpentine
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Zusammenfassung:Asbestos from the Mangalapur area of Holenarasipur Schist belt has been identified as anthophyllite contrary to the earlier report as tremolite. The serpentines in this area are 6-layer orthoantigorites and the chlorites are 14 Å, IIb polytypes of variable Si/Al ratios. The anthophyllite is derived from the alteration of antigorite, chlorite and talc by the hydrothermal metamorphism of the ultrabasic intrusives.
ISSN:0011-3891