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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:
Recommended:  CM2    [explanation]

This is 1 of 614 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 Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8746 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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