Computer Science
Scientific paper
Jul 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.280..219m&link_type=abstract
Nature, vol. 280, July 19, 1979, p. 219, 220.
Computer Science
8
Carbonaceous Chondrites, Meteoritic Composition, Order-Disorder Transformations, Silicates, Diffraction Patterns, Electron Microscopes, High Resolution, Pressure Effects, Serpentine, Temperature Effects, Carbonaceous Chondrites, Matrix, Electron Diffraction, Phyllosilicates, Murchison Meteorite, Electron Microscopy, Silicates, Crystals, Minerals, Composition, Optical Properties, X-Ray Analysis, Morphology, Pressure, Temperature, Brucite, C2 Chondrites, Serpentine, Mineralogy
Scientific paper
Observations of new types of layer silicates in the crystalline regions of the matrix of a carbonaceous chondrite are reported. Ion-thinned sections of the Murchison meteorite were observed by high-resolution transmission electron microscopy. Images obtained of patterns of fringe spacings of 4.9 and 7.3 A are interpreted as resulting from ordered and disordered sequences of brucite-like and serpentine-like layers, respectively. The temperature and pressure conditions of phyllosilicate formation in the Murchison matrix are discussed in light of the suggested crysotile serpentine and brucite layers and evidence of Fe and Al in the layered intergrowths.
Buseck Peter R.
MacKinnon Ian D. R.
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