Home Die Bestimmung der Al/Si-Verteilung mittels Neutronenbeugung in einem Plagioklas An66
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Die Bestimmung der Al/Si-Verteilung mittels Neutronenbeugung in einem Plagioklas An66

Published/Copyright: August 25, 2010

Abstract

An anorthite-rich plagioclase An66 from Lake County, Oregon, USA, was investigated by means of neutron diffraction. The distribution of aluminium and silicon atoms in the TO2-network was directly determined by neutron diffraction, whereby the method of the complementary Fouriersynthesis was applied. With increasing Si-content the Al-atoms at T1 (mo), T2 (oo) and T2 (mz) were substituted by Si-atoms. T1 (oz) is occupied in the region of An100-66 by Al-atoms. A reversible phase transition between I[unk] and C[unk] was observed at about 1200°C.

Published Online: 2010-8-25
Published in Print: 1980-1-1

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