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Northwest Africa 14516 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 14516 This is an OFFICIAL meteorite name. Abbreviation: NWA 14516 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: 269 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 321 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all] Search for other: Martian meteorites | ||||||||||||||||||||||||||||
Comments: | Approved 20 Dec 2021 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 14516 (NWA 14516) (Northwest Africa) Purchased: 2021 Classification: Martian meteorite (Shergottite) History: The meteorite was purchased from a meteorite dealer at the mineral show in Munich, Germany. Physical characteristics: Three light grayish fragments without fusion crust. Petrography: Coarse-grained igneous rock with diabasic texture, predominantly composed of up to 1 mm sized finely exsolved pyroxene and interstitial maskelynite grains both showing strong irregular compositional zoning. Maskelynite contains myrmekitic intergrowths of silica and sodic plagioclase. Minor phases include partly exsolved ilmenite, troilite, merrillite, and baddeleyite. Cracks are commonly filled with secondary calcite. The meteorite is highly shocked and contains shock melt veins and pockets. Geochemistry: pigeonite: Fs57.3±4.7Wo15.0±0.9 (Fs46.2-62.2Wo13.5-16.4, FeO/MnO=34-37, n=8); subcalcic augite: Fs27.7±7.0Wo31.9±1.6 (Fs21.4-45.2Wo27.4-34.0, FeO/MnO=26-34, n=17); maskelynite: An51.6±5.1Ab46.9±4.5Or1.5±0.7 (An46.2-58.2Ab40.8-53.1Or0.8-3.1, n=16) | ||||||||||||||||||||||||||||
Data from: MB110 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., 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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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