Mathematics – Logic
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989metic..24...43r&link_type=abstract
Meteoritics (ISSN 0026-1114), vol. 24, March 1989, p. 43-47.
Mathematics
Logic
5
Chondrites, Interplanetary Dust, Meteoritic Composition, Micrometeorites, Tin, Carbon Monoxide, Interstellar Chemistry, Interstellar Matter, Tin Oxides, Interplanetary Dust, Idps, Tin, Chondritic Material, Grains, Mineralogy, Laboratory Studies, Samples, Extraterrestrial, Photomicrographs, Volatiles, Data, Electron Microscopy, Oxides, Trace Elements, Enrichment
Scientific paper
Submicron platey Sn-rich grains are present in chondritic porous interplanetary dust particle (IDP) W7029 A and it is the second occurrence of a tin mineral in a stratospheric micrometeorite. Selected Area Electron Diffraction data for the Sn-rich grains match with Sn2O3 and Sn3O4. The oxide(s) may have formed in the solar nebula when tin metal catalytically supported reduction of CO or during flash heating on atmospheric entry of the IDP. The presence of tin is consistent with enrichments for other volatile trace elements in chondritic IDPs and may signal an emerging trend toward nonchondritic volatile element abundances in chondritic IDPs. The observation confirms small-scale mineralogical heterogeneity in fine-grained chondritic porous interplanetary dust.
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