A Comprehensive Study of Major, Minor, and Light Element Abundances in Over 100 Interplanetary Dust Particles

Kathie L. Thomas, Lindsay P. Keller, David S. McKay
1996 International Astronomical Union Colloquium  
AbstractOver 100 individual and cluster interplanetary dust particles (IDPs) have been analyzed for bulk abundances of 15 elements (C, O, Na, Mg, Al, Si, P, S, K, Ca, Ti, Cr, Mn, Fe, Ni). In general, IDPs have chondritic major element abundances, within a factor of 2 of the CI chondrites, and have carbon contents which average ~2-3 times higher than that of the most primitive, carbon-rich, carbonaceous meteorites (CI). The C-rich material is largely amorphous and is distributed throughout the
more » ... rticle as a matrix surrounding individual grains. The carbonaceous material has either smooth or vesicular texture; the latter texture suggests that volatiles could have been lost by particle heating which occurs during entry through the Earth's atmosphere.
doi:10.1017/s0252921100501699 fatcat:7htmcnhw2zbk7aoip53wj4gqnm