Physics
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999m%26ps...34..663k&link_type=abstract
Meteoritics & Planetary Science, vol. 34, no. 4, pp. 663-669 (1999).
Physics
19
Scientific paper
A shower of meteorite fragments fell at about 0730 hours local time on 13 June 1998 near the town of Portales, New Mexico. Thus far, 51 pieces of the Portales Valley (H6) meteorite have been recovered. This meteorite has an unusually large number of metallic veins. Some of these veins are also unusually thick, having widths on the order of centimeters. These wide veins have fine Widmanstätten structure, which is the first time it has been seen in an ordinary chondrite. This structure indicates the metallic veins and the host chondrite cooled slowly. These veins appear to have been produced by shock-metamorphic processes, which we infer produced a >20 km diameter impact crater on an H-chondrite planetesimal.
Britt Daniel T.
Consolmagno Guy J.
Farmer Mike
Gleason James D.
Haag Robert
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