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Northwest Africa 7932 | |||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7932 This is an OFFICIAL meteorite name. Abbreviation: NWA 7932 Observed fall: No Year found: 2013 Country: Morocco Mass: ![]() | ||||||||||||||||||||||||
Classification history: |
This is 1 of 622 approved meteorites (plus 1 unapproved name) classified as CV3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||
Comments: | Approved 31 Jul 2013 | ||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 102:
Northwest Africa 7932 (NWA 7932) Morocco Purchased: 2013 Classification: Carbonaceous chondrite (CV3) History: Purchased by Abdelfattah Gharrad, Abdellah Afiniss, and Adam Bates in Morocco, 2013. Physical characteristics: Single stone, dark-gray exterior, sawn surface shows small scattered chondrules and CAIs set in dark-gray matrix. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows dominant (~75% volume) fine-grained matrix, sparse PO and POP chondrules, most 200-500 μm, irregularly shaped chondrules common. Geochemistry: (C. Agee and L. Burkemper, UNM) Olivine range Fa0.8-38.6, n=43, ferroan olivine Fa13.4±10.9, Fe/Mn=99±55, n=37; aluminous high-Ca pyroxene, range Fs 0.2-16.2, range Al2O3 1.43-17.53 wt%, n=9; low-Ca pyroxene range Fs 1.2-24.1 n=4; plagioclase An81.2, n=1. (Karen Ziegler, UNM) Oxygen isotope mean values of 2 analyses on 2 acid-washed bulk samples, 1.6 and 1.7 mg, gave δ17O= -4.825, -5.155, δ18O= -1.283, -1.260, Δ17O= -4.148, -4.490 (linearized, all per mil). Classification: Carbonaceous chondrite (CV3), oxygen isotopes on CCAM, in CV3 field. Specimens: 20.5 g including a probe mount on deposit at UNM, Abdelfattah Gharrad, Abdellah Afiniss, and Adam Bates hold the main mass. | ||||||||||||||||||||||||
Data from: MB102 Table 0 Line 0: |
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Plots: | O isotopes: | ||||||||||||||||||||||||
Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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Geography:![]() |
Statistics: This is 1 of 2003 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) |