Microbeam analysis of four chondritic interplanetary dust particles for major elements, carbon and oxygen

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Carbon, Chondrites, Interplanetary Dust, Meteoritic Composition, Oxygen, Abundance, Carbonaceous Chondrites, Cometary Atmospheres, Stratosphere

Scientific paper

Chemical compositions determined using electron excited X-rays are reported for four interplanetary dust particles collected in the stratosphere. These analyses include measurements of carbon and oxygen abundances which are important elements in these primitive materials. Spot analyses show very heterogeneous compositions on a micrometer scale although average composition approaches that of C1 carbonaceous chondrites. While the spot analyses show intermediate compositions between cometary dust and carbonaceous chondrites, the heterogeneity more closely resembles that of comet Halley dust particles.

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