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| Northwest Africa 15327 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 15327 This is an OFFICIAL meteorite name. Abbreviation: NWA 15327 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass:  2 kg | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 82 approved meteorites classified as CK6. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
| Comments: | Approved 12 Nov 2022 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 111:
Northwest Africa 15327 (NWA 15327) (Northwest Africa) Purchased: 2021 Classification: Carbonaceous chondrite (CK6) History: Purchased in June of 2021 in Northwest Africa by an anonymous collector from a local meteorite dealer. Physical characteristics: This meteorite is a single 2 kg stone with a slightly conical flight-oriented shape. It has a mostly intact but somewhat sand ablated fusion crust on the leading surface, and a well-preserved black frothy scoriaceous texture on the trailing surface. A ~25 mm diameter core was extracted at a depth of ~75 mm for analysis, exposing a grey-brown mottled interior. Petrography: (D. Dickens, NMMS) Analysis of polished probe mount and BSE images shows a chondritic texture with sparse chondrule fragments and Cr-bearing magnetite set in a largely recrystallized silicate matrix. Olivine is Ni-bearing. Average size of plagioclase grains is >120 μm. Several CAIs were observed, but not quantitatively confirmed. Modal analysis of BSE images using ImageJ shows a silicate phase dominated by ~51.5% recrystallized nickel-bearing olivine, with chromium-bearing magnetite and other opaques embedded ubiquitously throughout the silicate phases comprising ~13%. Chondrule fragments, pyroxenes and plagioclase make up the remaining ~35.5%. Geochemistry: (D. Dickens, NMMS and A. S. Bell, CUB) Olivine Fa27.8±0.2, Ni0.4±0.1, N=5, low-Ca pyroxene Fs28.5±2.9Wo1.7±0.4, N = 2, pigeonite Fs21.0Wo8.5 N=1, augite Fs19.2Wo23.0, N=1, plagioclase Ab67.9±3.3An28.4±4.0Or3.7±0.8, N = 5. Classification: Carbonaceous chondrite CK6 Specimens: 20 g on deposit at Cascadia, an anonymous collector holds the main mass. | ||||||||||||||||||||||||||||||
| Data from: MB111 Table 0 Line 0: |
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| Institutions and collections |
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011) CUB: Daniel Ozdín, Mineralogical Museum of Comenius University, Faculty of Natural Sciences, Ilkovicova 6, 842 15 Bratislava, Slovakia (institutional address; updated 2 Dec 2018) |
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| References: | Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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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) | ||||||||||||||||||||||||||||||