NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Studies of Brazilian meteorites. XIII - Mineralogy, petrology, and chemistry of the Putinga, Rio Grande do Sul, chondriteThe Putinga, Rio Grande do Sul chondrite is described and classified as an L6. The mineral composition and some significant ratios of elements are reported, and the reasons for assignment to the L group and to petrologic type 6 are explained. The analysis suggests that maskelynite of oligoclase composition was formed by solid-state shock transformation of previously existing well-crystallized plagioclase at estimated shock pressures of about 250-350 kbar. This finding indicates that recrystallization (formation of well-crystallized oligoclase) preceded shock transformation formation of the maskelynite.
Document ID
19780063392
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Keil, K.
(New Mexico Univ. Albuquerque, NM, United States)
Lange, D.
(New Mexico, University Albuquerque, N. Mex., United States)
Ulbrich, M. N. C.
(New Mexico Univ. Albuquerque, NM, United States)
Gomes, C. B.
(Sao Paulo, Universidade Sao Paulo, Brazil)
Jarosewich, E.
(Smithsonian Institution, National Museum of Natural History, Washington D.C., United States)
Roisenberg, A.
(New Mexico Univ. Albuquerque, NM, United States)
Souza, M. J.
(Rio Grande do Sul, Universidade Federal, Porto Alegre, Brazil)
Date Acquired
August 9, 2013
Publication Date
June 30, 1978
Publication Information
Publication: Meteoritics
Volume: 13
Subject Category
Lunar And Planetary Exploration
Accession Number
78A47301
Funding Number(s)
CONTRACT_GRANT: NGL-32-004-064
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available