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Northwest Africa 13775 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13775 This is an OFFICIAL meteorite name. Abbreviation: NWA 13775 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 307 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all] Search for other: Martian meteorites | ||||||||||||||||||||||||||||||
Comments: | Approved 28 Mar 2021 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 110:
Northwest Africa 13775 (NWA 13775) (Northwest Africa) Purchased: 2021 Jan Classification: Martian meteorite (Shergottite) History: The meteorite was purchased by the main mass holder from a dealer in Temara, Morocco. Physical characteristics: Many small, light-brownish fragments without fusion crust. Petrography: The meteorite shows a porphyritic texure of up to 1.3 mm sized strongly zoned olivine phenocrysts set in a groundmass of zoned pigeonite and maskelynite. Olivine often contains magmatic inclusions with radial cracks extending into the host. Minor minerals are small homogeneous olivine, chromite, ilmenite, and pyrrhotite. Contains shock melt veins. Geochemistry: olivine phenocrysts: Fa40.9±13.6 (Fa27.0-60.3, FeO/MnO=47±3, n=9); small olivine: Fa45.7±0.1, FeO/MnO=47±2, n=3; complex zoned pyroxene: Fs33.0±9.5Wo18.6±11.7 (Fs23.4-46.8Wo5.3-43.1, FeO/MnO=29±3, n=8); maskelynite: An51.3±2.6Ab46.8±2.3Or1.9±0.3 (An47.8-55.0Ab43.6-49.9Or1.3-2.3, n=8) Classification: Martian; olivine-phyric shergottite | ||||||||||||||||||||||||||||||
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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Photos: |
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Geography: |
Statistics: This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names) |