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Northwest Africa 14870 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 14870 This is an OFFICIAL meteorite name. Abbreviation: NWA 14870 Observed fall: No Year found: 2022 Country: (Northwest Africa) Mass: 177.8 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 185 approved meteorites classified as CR2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and CR chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 9 May 2022 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 111:
Northwest Africa 14870 (NWA 14870) (Northwest Africa) Purchased: 2022 Feb Classification: Carbonaceous chondrite (CR2) History: The meteorite was purchased from a meteorite dealer in Guelmim, Morocco. Physical characteristics: Many small brownish fragments some of which with minor fusion crust. Petrography: The meteorite shows a dark brownish interior and is composed of abundant large metal-decorated type I chondrules (apparent mean diameter about 700 µm) set into a fine-grained ferroan matrix. Few type II chondrules and chondrule fragments but no CAI have been detected. Sulfides are present in type II chondrules and the matrix. Contains rare impact melt fragments. Geochemistry: olivine in type I chondrules: Fa4.0±1.2 (Fa2.7-6.1, Cr2O3: 0.60±0.06 wt%, n=15; low-Ca pyroxene: Fs6.7±5.4Wo1.2±0.7 (Fs1.8-16.4Wo0.8-3.0, n=8); olivine in type II chondrule: Fa18.9±2.1 (Fa16.7-21.0, n=2). Matrix analyses yield FeO=32.4±1.4 wt% and an average total of 85.2.7±1.1 wt% (5 µm defocused beam, N=6), the latter indicating the presence of hydrous minerals. | ||||||||||||||||||||||||||||||
Data from: MB111 Table 0 Line 0: |
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Institutions and collections |
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011) |
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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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Photos: |
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Geography: |
Statistics: This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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