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| Northwest Africa 16031 | |||||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 16031 This is an OFFICIAL meteorite name. Abbreviation: NWA 16031 Observed fall: No Year found: 2023 Country: (Northwest Africa) Mass:  92.5 g | ||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 50 approved meteorites classified as CVred3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||||
| Comments: | Approved 25 Jun 2023 | ||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 112:
Northwest Africa 16031 (NWA 16031) (Northwest Africa) Purchased: 2023 Jan Classification: Carbonaceous chondrite (CVred3) Petrography: (J. Gattacceca, CEREGE) Chondrite with chondrules with average apparent 1200±510 µm (n=19) and CAIs to 5 mm set in abundant iron-rich fine-grained matrix (37 vol% by point counting, n=305). Opaque minerals are metal (including tetrataenite), troilite, magnetite, present in chondrules and in matrix. Metal and troilite are encountered as blebs to 300 µm. Geochemistry: Olivine Fa3.71±4.42, range Fa0.3-14.1, Fa PMD 101% (n=14). Cr2O3 in ferroan olivine (Fa>1) 0.20±0.14 (n=8). Low-Ca pyroxene Fs1.26±0.44Wo2.28±1.46, range Fs0.94-2.13 (n=5). Defocused analyses of the matrix yield FeO=42.1±6.3 wt% and analytical total 89±4.0 wt% (n=5). Classification: Carbonaceous chondrite (CVred3). CVred based on the low Fa average value, and the significant metal content. Specimens: Type specimen at CEREGE, main mass with Kuntz | ||||||||||||||||||||||||||||||||
| Data from: MB112 Table 0 Line 0: |
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| Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 10 Jun 2023) Kuntz: Fabien Kuntz, France; Website (private address) |
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| Catalogs: |
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| References: | Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?
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| Geography: |
Statistics: This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names) | ||||||||||||||||||||||||||||||||