Ordered mixed-layer structures in the Mighei carbonaceous chondrite matrix
Mackinnon, Ian D.R. (1982) Ordered mixed-layer structures in the Mighei carbonaceous chondrite matrix. Geochimica et Cosmochimica Acta, 46(4), pp. 479-489.
High resolution transmission electron microscopy of the Mighei carbonaceous chondrite matrix has revealed the presence of a new mixed layer structure material. This mixed-layer material consists of an ordered arrangement of serpentine-type (S) and brucite-type (B) layers in the sequence ... SBBSBB. ... Electron diffraction and imaging techniques show that the basal periodicity is ~ 17 Å. Discrete crystals of SBB-type material are typically curved, of small size (<1 μm) and show structural variations similar to the serpentine group minerals. Mixed-layer material also occurs in association with planar serpentine. Characteristics of SBB-type material are not consistent with known terrestrial mixed-layer clay minerals. Evidence for formation by a condensation event or by subsequent alteration of preexisting material is not yet apparent. © 1982.
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|Item Type:||Journal Article|
|Additional Information:||Cited By (since 1996): 6
Export Date: 19 February 2013
Language of Original Document: English
Correspondence Address: Mackinnon, I.D.R.
|Keywords:||carbonaceous chondrite, matrix mineralogy, mixed layer structures, electron microscopy|
|ISSN:||1872-9533 (online) 0016-7037 (print)|
|Subjects:||Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > GEOLOGY (040300) > Extraterrestrial Geology (040302)
Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > GEOLOGY (040300) > Mineralogy and Crystallography (040306)
|Divisions:||Current > Institutes > Institute for Future Environments|
|Copyright Owner:||Copyright 2008 Elsevier B.V.|
|Deposited On:||25 Feb 2013 22:01|
|Last Modified:||10 Jan 2016 22:09|
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