Computer Science
Scientific paper
May 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984natur.309..240m&link_type=abstract
Nature (ISSN 0028-0836), vol. 309, May 17, 1984, p. 240-242.
Computer Science
31
Carbonaceous Chondrites, Meteoritic Composition, Meteoritic Microstructures, Mineralogy, Brucite, Electron Microscopy, Serpentine, Meteorites, Phases, Structure, C2M Chondrites, Carbonaceous Chondrites, Matrix, Microscopy, Hrtem, Chemistry, Comparisons, Classification, Mineralogy, Formation, Murchison, Samples, Meteorite, Data
Scientific paper
A recent investigation of C2M carbonaceous chondrite meteorite matrices using electron microscopy and High-Resolution Transmission Electron Microscopy (HRTEM) has provided data on the structure and chemistry of Poorly Characterized Phases (PCP). It is suggested that a dominant matrix variety (10 A PCP) has a structure equivalent to iron-rich tochinilite (6Fe0.9S5/Fe, Mg//OHO2/), which consists of coherently intrastratified mackinawite and brucite sheets. In addition, it is proposed that 17 A PCP is a commensurate intergrowth of serpentine and tochinilite layers. Various forms of PCP observed in carbonaceous chondrites appear to be intergrowths of tochinilite, serpentine, and tochinilite-serpentine minerals.
MacKinnon Ian D. R.
Zolensky Michael E.
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