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Northwest Africa 5738 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 5738 This is an OFFICIAL meteorite name. Abbreviation: NWA 5738 Observed fall: No Year found: 2009 Country: Morocco Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 224 approved meteorites classified as Eucrite-br. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 25 May 2012 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 100:
Northwest Africa 5738 (NWA 5738) Morocco Found: 2009 Classification: HED achondrite (Eucrite, brecciated) Physical characteristics: Almost entirely fusion-crusted. Petrography: Brecciated eucrite with glassy shock-melt veins. Pyroxene FeO/MnO (avg. wt. ratio) 32.9. Monomict status is shown by pyroxne data: 62 analyses all along a single tie-line on pyroxene quadrilateral. Compositionally, shock-melt vein glasses resemble bulk rock. Geochemistry: Oxygen isotopic composition (B-G. Choi and I. Ahn, using CO2 laser-fluorination at KOPRI): δ18O = 3.59, δ17O = 1.62 and Δ17O = -0.27 (all per mil). Bulk-rock INAA and EPMA data (e.g., Fe/Mn, Ga/Al) confirm it is a eucrite. Classification: Brecciated eucrite. | ||||||||||||||||||||||||||||
Data from: MB100 Table 1 Line 1278: |
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Plots: | O isotopes: | ||||||||||||||||||||||||||||
Institutions and collections |
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) Gessler: Nicholas Gessler, 2010 Calgary Lane, Los Angeles, CA 90077, United States (private address; updated 7 Jul 2016) KOPRI: Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon, Korea, 406-840, South Korea; Website (institutional address; updated 20 Dec 2014) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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Geography:![]() |
Statistics: This is 1 of 1991 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) |