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Northwest Africa 4519 | |||||||||||||
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Basic information | Name: Northwest Africa 4519 This is an OFFICIAL meteorite name. Abbreviation: NWA 4519 Observed fall: No Year found: 2001 Country: Morocco Mass: ![]() | ||||||||||||
Classification history: |
This is 1 of 649 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||
Comments: | Approved 24 Jul 2007 | ||||||||||||
Writeup![]() |
Writeup from MB 92:
Northwest Africa 4519 Morocco Find:2001 Achondrite (ureilite) History: Purchased in Zagora, Morocco in 2001. Physical characteristics: The deformed conical shaped mass (114 g; 6.5x3.5 cm) is partially fusion crusted. Petrography: (H. Takeda, Chiba and A. Yamaguchi, NIPR).It contains olivine and pyroxene with carbonaceous veins at grain boundaries. Mafic silicate crystals seem to show a preferred orientation, two to three crystals up to 4.2x1.4 mm in size are joined with common elongation direction without carbonaceous veins to form a large aggregate (ca. 4.2x3.8 mm) with carbonaceous materials around it. Mineral compositions and geochemistry: Olivine (Fo83-80 [cores]; Fo89 [rims]), pyroxene (Fs16.7Wo8.6). Oxygen Isotopes: (M. Kusakabe, OkaU), δ17O = 3.29, δ18O = 8.20 (both ‰). Classification: Achondrite (ureilite); minimal weathering. Type specimen: A total of 20 g of sample and two thin sections are on deposit at NIPR. Fectay holds the main mass. | ||||||||||||
Data from: MB92 Table 2 Line 85: |
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Plots: | O isotopes: | ||||||||||||
Institutions and collections |
NIPR: Antarctic Meteorite Research Center, National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan; Website (institutional address; updated 9 Dec 2013) Chiba: Chiba Institute of Technology, Tsudanuma, Narashino, Chiba 275-0016, Japan (institutional address) Fectay: Bruno Fectay and Carine Bidaut, La Memoire de la Terre SARL, 39800 Aumont, France; Website (private address) OkaU: Institute for Study of the Earth's Interior, Okayama University, Misasa Tottori 682-0193, Japan (institutional address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
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Geography:![]() |
Statistics: This is 1 of 2012 approved meteorites from Morocco (plus 35 unapproved names) (plus 1 impact crater) |