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Northwest Africa 13415 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13415 This is an OFFICIAL meteorite name. Abbreviation: NWA 13415 Observed fall: No Year found: 2019 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 569 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 19 Sep 2020 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 109:
Northwest Africa 13415 (NWA 13415) (Northwest Africa) Purchased: 2019 Classification: HED achondrite (Eucrite) History: The meteorite was purchased from a local meteorite dealer in Tindouf, Algeria. Physical characteristics: Dark brownish individual with minor fusion crust. Petrography: The meteorite is an unbrecciated fine-grained volcanic rock with some interspersed more coarse-grained regions. Dominant minerals are exsolved pyroxene and calcic plagioclase with grain sizes of 30-50 μm in fine-grained parts and 200-500 μm in coarse-grained regions. Minor phases include silica, chromite, FeS, ilmenite, and metallic Fe. Geochemistry: low-Ca pyroxene: Fs63.1±0.5Wo6.9±0.5 (Fs62.3-64.0Wo5.8-7.4, n=15, FeO/MnO=29-31); Ca-pyroxene: Fs32.4±0.5Wo42.4±0.5 (Fs31.6-33.2Wo41.3-43.3, n=16, FeO/MnO=32-36); calcic plagioclase: An89.3±1.4 (An87.9-91.9, n=14) | ||||||||||||||||||||||||||||
Data from: MB109 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 Meteoritical Bulletin, no. 109, in preparation (2020)
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Photos: |
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Geography: |
Statistics: This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |