Interplanetary Dust: Trace Element Analysis of Individual Particles by Neutron Activation

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Science  30 Nov 1979:
Vol. 206, Issue 4422, pp. 1075-1077
DOI: 10.1126/science.206.4422.1075


Although micrometeorites of cometary origin are thought to be the dominant component of interplanetary dust, it has never been possible to positively identify such micrometer-sized particles. Two such particles have been identified as definitely micrometeorites since their abundances of volatile and nonvolatile trace elements closely match those of primitive solar system material.