Metal and associated phases in Bishunpur, a highly unequilibrated ordinary chondrite

Details Metal and associated phases in Bishunpur, a highly unequilibrated ordinary chondrite Metal and associated phases in Bishunpur, a highly unequilibrated ordinary chondrite

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981gecoa..45.1001r&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 45, July 1981, p. 1001-1015.

Computer Science

23

Chondrites, Metals, Meteoritic Composition, Sulfides, Abundance, Chondrule, Electron Microscopy, Grain Boundaries, Petrology, Grains, Meteorites, Ordinary Chondrites, Metals, Phases, Comparisons, Bishunpur Meteorite, Petrography, Characteristics, Kamacite, Chemistry, Experiments, Procedure, Electron Microprobe, Analysis, Photomicrographs, Chondrules, Composition, Carbonaceous Chondrites, Nickel, Silicon, Sulfides, Matrix, Formation, Metamorphism, Cobalt, Chromium

Scientific paper

Bishunpur is one of the most unequilibrated ordinary chondrites, and preserves a relatively unaltered record of solar nebular processes. A survey of three polished thin sections of Bishunpur revealed that metal occurs in three textural domains: (1) in the matrix, (2) within chondrules and (3) in coatings on chondrules. A table provides a textural classification of the various metal types found in Bishunpur and their composition. Electron-microprobe analyses are discussed, and similarities between Bishunpur metal and opaques and those in carbonaceous chondrites are considered. Attention is given to low-Ni kamacite grains in chondrule olivine, Si-bearing chondrule metal, spheroidal metal in chondrules, metal and sulfide-bearing rims, coarse matrix metal, and fine matrix metal formation.

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