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Northwest Africa 12341
Basic information Name: Northwest Africa 12341
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12341
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 719 g
Classification
  history:
Recommended:  L3    [explanation]

This is 1 of 648 approved meteorites classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 14 Dec 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12341 (NWA 12341)

(Northwest Africa)

Purchased: 2018 Aug

Classification: Ordinary chondrite (L3)

Petrography: (K. Metzler, IfP) Unshocked ordinary chondrite of low petrologic type, consisting of chondrules (types I and II) of all major textural types (PO, POP, PP, BO, C) with small amounts of interchondrule matrix. The apparent mean chondrule size is 470 µm (n=49). Nearly all metal has been oxidized by terrestrial weathering.

Geochemistry: Mineral compositions and geochemistry: The mean olivine composition is Fa18.4±12.3 (Fa2.3-39.9; n=21); the mean low-Ca pyroxene composition is Fs7.3±6.4Wo0.7±0.5 (Fs1.3-23.8Wo0.2-2.4); n=22.

Classification: L chondrite based on mean apparent chondrule size. Petrologic type based on the chemical variation of olivine and pyroxene. The PMD of Fa values is 67%, indicating that the petrologic subtype is <3.5.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Guelmim, Morocco
Date:P 2018 Aug
Mass (g):719
Pieces:5
Class:L3
Shock stage:S1
Weathering grade:W4
Fayalite (mol%):18.4±12.3 (n=21)
Ferrosilite (mol%):7.3±6.4 (n=22)
Wollastonite (mol%):0.7±0.5
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP, Münster
Main mass:Nourddine Azelmat, Morocco
Comments:Submitted by K. Metzler, IfP
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6592 approved meteorites from (Northwest Africa) (plus 2020 unapproved names)

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