NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Matrix and fine-grained rims in the unequilibrated CO3 chondrite, ALHA77307 - Origins and evidence for diverse, primitive nebular dust componentsSEM, TEM, and electron microprobe analysis were used to investigate in detail the mineralogical and chemical characteristics of dark matrix and fine-grained rims in the unequilibrated CO3 chondrite ALHA77307. Data obtained revealed that there was a remarkable diversity of distinct mineralogical components, which can be identified using their chemical and textural characteristics. The matrix and rim components in ALHA77307 formed by disequilibrium condensation process as fine-grained amorphous dust that is represented by the abundant amorphous component in the matrix. Subsequent thermal processing of this condensate material, in a variety of environments in the nebula, caused partial or complete recrystallization of the fine-grained dust.
Document ID
19930052987
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Brearley, Adrian J.
(New Mexico Univ. Albuquerque, United States)
Date Acquired
August 16, 2013
Publication Date
April 1, 1993
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 57
Issue: 7
ISSN: 0016-7037
Subject Category
Lunar And Planetary Exploration
Accession Number
93A36984
Funding Number(s)
CONTRACT_GRANT: NAG9-497
CONTRACT_GRANT: NAG9-30
Distribution Limits
Public
Copyright
Other

Available Downloads

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