ON OFFER METEORITE OF 8.2 GRAMS
NWA 13323 CARBONACEOUS CK3
Officially classified and approved as NWA 13323
Classified and studied by world renowned and profoundly respected
Dr Anthony J. Irving and team at University of Washington.
Northwest Africa 13323 this is an official meteorite name
DISCOVERED IN FEBRUARY 2020
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OFFICIAL CLASSIFICATION DATA SOURCE:
THE METEORITICAL SOCIETY
INTERNATIONAL SOCIETY FOR METEORITICS AND PLANETARY SCIENCE
LUNAR AND PLANETARY INSTITUTE
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Northwest Africa 13323
Basic information Name: Northwest Africa 13323
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13323
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 3.96 kg
Comments: Approved 3 Jul 2020
Writeup from MB 109:
Northwest Africa 13323 (NWA 13323)
Purchased: 2020 Feb
Classification: Carbonaceous chondrite (CK3)
History: Purchased by Mbark Arjdal in February 2020 from a dealer in Timbuktu, Mali.
Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed granular and some BO chondrules (apparent diameter 950 ± 460 µm, N = 23) plus sparse very fine grained, irregularly-shaped CAI are set in a fine grained matrix (~25 vol.%, deep brown in thin section) containing troilite, altered Cr-magnetite and rare taenite. Chondrules contain rounded grains of Cr-magnetite, some of which has been altered to red-brown iron hydroxides.
Geochemistry: Olivine (Fa17.9±18.4, range Fa0.3-44.1, N = 6), low-Ca pyroxene (Fs3.6±5.0Wo2.0±2.4, range Fs0.6-9.4Wo0.5-4.8, N = 3), pigeonite (Fs1.1Wo11.5), subcalcic augite (Fs1.4Wo29.2; Fs1.1Wo35.8; N = 2), diopside (Fs0.8Wo40.3), magnetite (Cr2O3 = 0.2-7.0 wt.%, N = 2).
Classification: Carbonaceous chondrite (CK3).
Specimens: 20.2 g including one polished thin section at UWB; remainder with Mr. M. ARJDAL.
Place of purchase: Timbuktu, Mali
Date: P 2020 Feb
Mass (g): 3957
Shock stage: S2
Weathering grade: low
Fayalite (mol%): 17.9±18.4
Ferrosilite (mol%): 3.6±5.0
Wollastonite (mol%): 2.0±2.4
Classifier: A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g): 20.2
Type spec location: UWB
Main mass: M. Arjdal
Comments: Work name Arj ZM 250; submitted by A. Irving
and collections UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS: NASA ADS
Find references in Google Scholar: Google Scholar
This lists important revisions made to data for this record.
- Main Mineral/ Name Meteorite
- RARE CARBONACEOUS CK3 METEORITE
- Mineral Form/ Type Meteorite
- Carbonaceous Chondrite Meteorite
- NWA 13233
- 8.2 g
- Origin (Country)