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Northwest Africa 15327
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:help 2 kg
Meteoritical Bulletin:  MB 111  (2023)  CK6
Recommended:  CK6    [explanation]

This is 1 of 83 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 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:
  Table 0
  Line 0:
Place of purchase:Northwest Africa
Date:P 2021
Mass (g):2000
Shock stage:low
Weathering grade:low
Fayalite (mol%):27.8±0.2
Ferrosilite (mol%):28.5±2.9, 16.6±1.3
Wollastonite (mol%):1.7±0.4, 15.8±210.3
Classifier:D. Dickens, NMMS
Type spec mass (g):20g
Type spec location:Cascadia
Main mass:Anonymous collector
Comments:Submitted by Dustin Dickens, Field name CMS01; submitted by D. Dickens
   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)
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Public domain photographs:
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     This is 1 of 9776 approved meteorites from (Northwest Africa) (plus 1862 unapproved names)

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