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Northwest Africa 14869
Basic information Name: Northwest Africa 14869
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14869
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 42 g
Classification
  history:
Recommended:  Diogenite-melt breccia    [explanation]

This is 1 of 6 approved meteorites classified as Diogenite-melt breccia.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 9 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14869 (NWA 14869)

(Northwest Africa)

Purchased: 2022 Jan

Classification: HED achondrite (Diogenite, melt breccia)

History: The meteorite was purchased from a meteorite dealer in Talsint, Morocco.

Physical characteristics: Many small light brownish fragments some of which with minor fusion crust.

Petrography: Achondritic melt breccia predominantly composed of up to 3 mm sized zoned low Ca-pyroxene plus less abundant magnesian low-Ca pyroxene, olivine, and calcic plagioclase set in recrystalized melt rock matrix dominated by zoned pyroxene and lath-shaped feldspar grains. Minor phases include troilite and Ti-poor chromite. Pyroxene of eucritic composition is absent.

Geochemistry: zoned low-Ca pyroxene: Fs28.2±6.9Wo2.8±0.9 (Fs23.0-39.7Wo2.1-4.3, FeO/MnO=24-30, n=6); magnesian low-Ca pyroxene: Fs15.4±1.8Wo0.6±0.3 (Fs13.4-18.3Wo0.2-1.0, FeO/MnO=21-26, n=6); olivine: Fa39.0±0.1 (Fa38.9-39.2, FeO/MnO=44±2, n=7); magnesian olivine: Fa15.2±0.2, (Fa14.8-15.5, FeO/MnO=43±3, n=7); plagioclase: An91.9±0.5 (An91.2-92.7, n=7)

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Talsint, Morocco
Date:P 2022 Jan
Mass (g):42
Pieces:many
Class:Diogenite-melt breccia
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):39.0; 15.2
Ferrosilite (mol%):28.2; 15.4
Wollastonite (mol%):2.8; 0.6
Classifier:A. Greshake, MNB
Type spec mass (g):9.8
Type spec location:MNB
Main mass:Noreddine Azelmat
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:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8674 approved meteorites from (Northwest Africa) (plus 1882 unapproved names)

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