Chemical characterization of seven Large Area Collector particles by SXRFOptical microscopy and synchrotron X-ray fluorescence (SXRF) are used to analyze the chemical composition of seven dark-appearing cosmic-dust particles obtained in the stratosphere during NASA Johnson Large Area Collector flights. The experimental setup and procedures are outlined, and the results are presented in extensive tables. Three of the particles had abundances similar to those of chondrites (except for low Ca values in one particle); two had a metallic appearance and spectra dominated by Fe and Zn; one contained Cu and Cr plus small amounts of Fe and Zn; and one had igneous-type abundances of minor and trace elements while containing all of the elements seen in chondritic particles, suggesting it may be of extraterrestrial origin.
Document ID
19910057747
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Flynn, G. J. (New York, State University Plattsburgh, United States)
Sutton, S. R. (Chicago, University IL, United States)