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Northwest Africa 1929 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 1929 This is an OFFICIAL meteorite name. Abbreviation: NWA 1929 Observed fall: No Year found: 2003 Country: Morocco Mass: 922 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 453 approved meteorites classified as Howardite. [show all] Search for other: Achondrites, HED achondrites, and Howardites | ||||||||||||||||||||||||||||||
Comments: | Approved 3 Feb 2006 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 90:
Northwest Africa 1929 Morocco Find: May 2003 Achondrite (howardite) History: A 922.2 g, partially crusted, complete stonewas purchased in Erfoud, Morocco, in May 2003. Petrography: (T. Bunch and J. Wittke, NAU ) Abreccia of 72 vol% cumulate eucrite clasts, 8% subophitic clasts, 14%diogenites, and 6% melt clasts. Pervasive solid-state recrystallization ofplagioclase and pyroxenes with localized melt pockets and veins in clasts. Geochemistry: Coarse-grained gabbroic eucrite:Pyroxene (Fs45–40Wo7–20); plagioclase (An91.2–95.3);metal (Ni = 0.97; Cr = 0.87 [both wt%]). Diogenite: Pyroxene (Fs43–54Wo2.5–3.6;Fe/Mn = 36, 37). Classification: Achondrite (howardite); high shock. Specimens: A 22.02 g type specimen is on deposit at NAU*.MFarmer holds the main mass. | ||||||||||||||||||||||||||||||
Data from: MB113 Table 0 Line 0: |
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Data from: MB90 Table 2 Line 9: |
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Institutions and collections |
NAU*: Collection discontinued. Specimens redistributed as shown in individual meteorite records, United States (institutional address; updated 24 Jun 2024) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) MFarmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address) NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States (institutional address; updated 12 Apr 2012) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006) Published in Meteoritical Bulletin, no. 113, in preparation (2024)
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Photos: |
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Geography: |
Statistics: This is 1 of 2163 approved meteorites from Morocco (plus 32 unapproved names) (plus 1 impact crater) |