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Northwest Africa 14113 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 14113 This is an OFFICIAL meteorite name. Abbreviation: NWA 14113 Observed fall: No Year found: 2021 Country: Algeria Mass: 350 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 635 approved meteorites classified as CM2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 11 Nov 2021 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 14113 (NWA 14113) Algeria Purchased: 2021 Classification: Carbonaceous chondrite (CM2) History: Purchased from an Algerian meteorite dealer in March 2021. Reportedly found in Algeria in 2021. Physical characteristics: Dark fusion-crusted exterior, broken surface reveals numerous small chondrules set in a dark gray matrix that makes up approximately 60% of this meteorite. Small CAIs are visible. Petrography: (A. Ross and C. Agee, UNM) Microprobe and reflected light microscopy examination reveal a fine-grained matrix that gives low microprobe totals from the presence of hydrous phases. Apparent chondrule diameter 313±149 μm (n=14). Chromite, Ni-bearing troilite, pentlandite, calcite, diopside, and oxidized iron were detected. Geochemistry: (A. Ross and C. Agee, UNM) Olivine Fa26.0±19.0, n=17; ferroan chondrule olivine Fa36.3±11.3, Fe/Mn=101±14, Cr2O3=0.36±0.15, n=12; low-Ca pyroxene Fs8.2±14.9Wo4.2±4.2, n=5; matrix (20 μm defocused microprobe beam) analytical totals of 76.9±1.3 wt% and FeO=31.5±5.6 wt%, n=3. Classification: Carbonaceous chondrite (CM2). The low analytical totals in the matrix indicate the presence of hydrous phases. Specimens: 20.1 g on deposit at UNM, Simon de Boer and Matthew Stream hold the main mass. | ||||||||||||||||||||||||||||||
Data from: MB110 Table 0 Line 0: |
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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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography: |
Statistics: This is 1 of 1344 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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