The association between organic matter and clay minerals in carbonaceous chondrites

Pearson, V. K.; Sephton, M. A.; Bland, P. A.; Franchi, I. A. and Gilmour, I. (2001). The association between organic matter and clay minerals in carbonaceous chondrites. In: 64th Annual Meeting of the Meteoritical Society, 10-14 Sep 2001, Vatican City, Italy.

URL: http://www.lpi.usra.edu/meetings/metsoc2001/pdf/52...

Abstract

There is an established relationship between organic matter content and aqueous alteration processes [1,2]. However, the relationship between meteoritic organic matter and individual aqueously generated mineral matrix phases is poorly understood. Meteoritic organic matter is primarily composed of C, H and N and therefore their bulk abundances in chondrites are strongly controlled by the organic matter content. Mössbauer Spectroscopy can characterise the ferric iron bearing matrix minerals associated with aqueous alteration, such as Fe- bearing clays and magnetite. A combination of these two parameters may indicate the presence of any organic-mineral interactions.

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