Fe-57 Moessbauer Spectroscopy of Fulgurites: Implications for Chemical ReductionThe high temperature (superliquidus) processing of silicates often results in very reduced products, such as Si-bearing Fe metal in type-1 chondrules and in lunar regolith agglutinates. Previous work on fulgurites (the glassy products of the lightning strike fusion of sand, soil, or rock) found silicon metal and iron-silicon alloys inside the silicate glass. The mechanism for this extreme reduction is not yet understood. In this work, we begin a Fe-57 Moessbauer spectroscopy study as well as continuing a microprobe study of several fulgurites in order to better constrain the extent and process of Fe reduction.
Document ID
20040059809
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Sheffer, A. A. (Arizona Univ. Tucson, AZ, United States)
Dyar, M. D. (Mount Holyoke Coll. South Hadley, MA, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Lunar and Planetary Science XXXV: Impact-Related Deposits