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Northwest Africa 15298
Basic information Name: Northwest Africa 15298
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15298
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 42 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  CM2
Recommended:  CM2    [explanation]

This is 1 of 636 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Approved 1 Oct 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15298 (NWA 15298)

(Northwest Africa)

Purchased: 2022

Classification: Carbonaceous chondrite (CM2)

History: The meteorite was reportedly found 2021 in the Erg Chech region, Algeria and subsequently purchased from a local meteorite dealer.

Physical characteristics: Several small, almost black fragments partly covered with fusion crust

Petrography: Brecciated carbonaceous chondrite composed of small (apparent mean diameter about 250 μm) chondrules, chondrule pseudomorphs, mineral fragments, and rare CAIs set into abundant fine-grained matrix. Some components are surrounded by fine-grained dust rims. The Fe-rich matrix contains abundant sulfides and Ca-carbonates.

Geochemistry: Matrix analyses yield FeO=37.8±4.8 wt% and an average total of 86.2±1.5 wt% (5 µm defocused beam, N=10), the latter indicating the presence of hydrous minerals.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2022
Mass (g):42
Pieces:several
Class:CM2
Shock stage:S1
Weathering grade:low
Fayalite (mol%):12.6±15.9 (0.8-46.1, n=15)
Ferrosilite (mol%):4.1±0.9 (3.3-5.5, n=15)
Wollastonite (mol%):1.4±1.0 (0.7-3.1, n=15)
Classifier:A. Greshake, MNB
Type spec mass (g):9.5
Type spec location:MNB
Main mass:Mateusz Szyszko
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
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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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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