NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Rb-Sr and Sm-Nd Isotope Systematics of Shergottite NWA 856: Crystallization Age and Implications for Alteration of Hot Desert SNC MeteoritesNakhlite NWA 998 was discovered in Algeria in 2001, and is unique among the six known members of this group of Martian meteorites in containing significant modal orthopyroxene. Initial petrologic and isotopic data were reported by Irving et al. This 456 gram stone consists mainly of sub-calcic augite with subordinate olivine and minor orthopyroxene, titanomagnetite, pyrrhotite, chlorapatite, and intercumulus An(sub 35) plagioclase. We report here preliminary results of radiogenic isotopic analyses conducted on fragmental material from the main mass.
Document ID
20040059920
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Brandon, A. D.
(NASA Johnson Space Center Houston, TX, United States)
Nyquist, L. E.
(NASA Johnson Space Center Houston, TX, United States)
Shih, C.-Y.
(Lockheed Martin Space Operations Houston, TX, United States)
Wiesmann, H.
(Lockheed Martin Space Operations Houston, TX, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Lunar and Planetary Science XXXV: Martian Meteorites: Chemical Weathering
Subject Category
Lunar And Planetary Science And Exploration
Distribution Limits
Public
Copyright
Public Use Permitted.
Document Inquiry

Available Downloads

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