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Northwest Africa 13654 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13654 This is an OFFICIAL meteorite name. Abbreviation: NWA 13654 Observed fall: No Year found: 2007 Country: (Northwest Africa) Mass: 138 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 474 approved meteorites classified as LL3. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||
Comments: | Approved 16 Jan 2021 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 13654 (NWA 13654) (Northwest Africa) Purchased: 2007 Jun Classification: Ordinary chondrite (LL3) History: Purchased from a moroccan dealer at the mineral show in Sainte-Marie-aux-Mines, France. Physical characteristics: Single subrounded stone without fusion crust. Petrography: (K. Metzler, IfP) Ordinary chondrite of low petrologic type consisting of chondrules (up to ~2 mm), chondrule fragments, troilite, very low amounts of Fe-Ni metal, and low amounts of fine-grained interchondrule matrix. The mean apparent chondrule size is 553 µm (n=380). Geochemistry: Mineral compositions and geochemistry: (K. Metzler, S. Ebert, IfP) The mean olivine composition is Fa18.2±12.3 (3.2-43.6; n=22); the mean low-Ca pyroxene composition is Fs11.0±8.4Wo1.4±1.2 (Fs1.5-30.7Wo0.2-3.9; n=24). The mean value of Cr2O3 (wt.%) in ferroan olivine and the 1-sigma standard deviation is 0.14±0.06 (n=44), similar to GRO 95544 (L3.2) and Krymka (LL3.2). Classification: LL chondrite, based on mean chondrule size and very low metal content. Estimated petrologic subtype 3.2. | ||||||||||||||||||||||||||||||
Data from: MB110 Table 0 Line 0: |
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Institutions and collections |
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012) |
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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 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||||
Crosslinks: |
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Revision history: |
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