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| Northwest Africa 15524 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 15524 This is an OFFICIAL meteorite name. Abbreviation: NWA 15524 Observed fall: No Year found: 2022 Country: (Northwest Africa) Mass:  1312 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 1 Apr 2023 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 112:
Northwest Africa 15524 (NWA 15524) (Northwest Africa) Purchased: 2022 Oct Classification: Carbonaceous chondrite (CR2) History: Reportedly found in 2021 in the area of In Salah, Algeria. Petrography: (K. Metzler, IfP) Unequilibrated chondrite, consisting of metal-bearing chondrules, chondrule fragments, and few CAIs, embedded in a fine-grained brownish matrix (~40 vol% matrix). The chondrule population is dominated by porphyritic type I chondrules, some of which contain Ca-rich plagioclase. A few type II chondrules were observed. Many type I chondrules are (multi-)layered, showing igneous rims and layers of metal beads. Apparent chondrule sizes are mostly between 400 and 1000 µm; a few chondrules with sizes up to 3 mm are present. The interchondrule matrix contains clusters of magnetite (platelets and framboids), indicative of aqueous alteration processes. Geochemistry: Mineral compositions and geochemistry: The mean olivine composition is Fa7.4±11.5 (Fa0.8-37.2; n=18); the mean low-Ca pyroxene composition is Fs3.1±1.4 Wo0.8±0.3 (Fs1.4-6.1 Wo0.3-1.3; n=15). Classification: CR2 chondrite based on chondrule size and texture, mineral chemistry, and occurrence of magnetite clusters in the interchondrule matrix. | ||||||||||||||||||||||||||||||
| Data from: MB112 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 Meteoritical Bulletin, no. 112, in preparation (2023)
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| Photos: |
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| Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||||
| Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
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| Revision history: |
This lists important revisions made to data for this record.
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