Bismuth in interplanetary dust

Details Bismuth in interplanetary dust Bismuth in interplanetary dust

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984natur.311..135m&link_type=abstract

Nature (ISSN 0028-0836), vol. 311, Sept. 13, 1984, p. 135-138.

Astronomy and Astrophysics

Astronomy

24

Bismuth Oxides, Interplanetary Dust, Astronomical Models, Atmospheric Entry, Chondrites, Nebulae, Cosmic Dust, Interplanetary Dust, Bismuth, Abundance, Stratosphere, Samples, Extraterrestrial, Microscopy, Aem, Aggregates, Enrichment, Origin, Comparisons, Concentration, Grains, Formation, Heating, Contamination, Condensation, Models

Scientific paper

Samples of a large (≡60 μm) chondritic porous (CP) aggregate collected from the stratosphere have been analysed in detail by analytical electron microscopy. Previous studies of CP aggregates have shown that they are extraterrestrial in origin and may be related to cometary debris. The authors report a high concentration of Bi2O3 grains within the large CP aggregate designated W7029*A (≡60 μm) and suggest they formed by rapid heating (≡300°C) of elemental Bi grains within the aggregate during atmospheric entry.

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