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| Northwest Africa 14549 | |||||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 14549 This is an OFFICIAL meteorite name. Abbreviation: NWA 14549 Observed fall: No Year found: 2021 Country: Mauritania Mass:  1240 g | ||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 645 approved meteorites (plus 1 unapproved name) classified as CO3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites | ||||||||||||||||||||||||||||||||
| Comments: | Approved 29 Jan 2022 | ||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 111:
Northwest Africa 14549 (NWA 14549) Mauritania Purchased: 2021 Classification: Carbonaceous chondrite (CO3) History: A single stone was found in northwest Africa by a nomad. The meteorite was eventually purchased by Carlos Muñecas (Expometeoritos) from a dealer of Morocco. Physical characteristics: The stone has angular shape and appears to be oriented. A wind-ablated fusion crust covers ~70% of the sample. The cut face shows abundant small chondrules and metal grains. Petrography: Description and classification (A. Love, App) The sample has a chondritic texture composed of abundant small chondrules, fragments, isolated mineral fragments and CAIs set within a semi-transparent matrix containing FeNi metal and sulfides. Chondrules have an average diameter of 243 µm (n=153). Additional minerals are: phosphates, chromite, ilmenite and pentlandite. Geochemistry: (A. Love, App) Olivine Fa25.2±11.9 (Fa3.6-37.2), Fe/Mn=97.6±19.2, Cr2O3 in ferroan olivine=0.1±0.1 CV=47%, n=16; low-Ca pyroxene Fs3.0±1.8Wo1.6±1.1 (Fs0.9-6.2Wo0.8-3.8), n=10. Classification: Carbonaceous chondrite (CO3 estimated subtype CO3.6, C-S1, W2) Based upon chondrule size, presence of CAIs and magnetic susceptibility, sample is a CO. Poorly-equilibrated mineral compositions, mean and CV of olivine Fa and dominant blue CL signatures (Sears et al., 1991), iron-enrichment textures (Scott and Jones, 1990) suggest sample is CO3.6. Specimens: Carlos Muñecas (Expometeoritos) holds the main mass. A polished thin section and a 27.01 g end cut are on deposit at App. | ||||||||||||||||||||||||||||||||
| Bibliography: |
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| Data from: MB111 Table 0 Line 0: |
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| 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) App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013) |
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| Catalogs: |
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| References: | Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Geography:
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Statistics: This is 1 of 221 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters) | ||||||||||||||||||||||||||||||||
| Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
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| Revision history: |
This lists important revisions made to data for this record.
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