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Northwest Africa 11843
Basic information Name: Northwest Africa 11843
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11843
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 76 g
Classification
  history:
Recommended:  LL7    [explanation]

This is 1 of 59 approved meteorites classified as LL7.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 26 Apr 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 11843 (NWA 11843)

(Northwest Africa)

Purchased: 2018

Classification: Ordinary chondrite (LL7)

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

Physical characteristics: Dark-brownish individual partly covered with fusion crust.

Petrography: The meteorite shows a thoroughly recrystallized texture of predominantly olivine and low-Ca pyroxene with more minor albitic feldspar. Rarely some relictic chondrule fragments are encountered. Opaque phases are troilite, Ni-bearing pyrrhotite, and FeNi metal. The meteorite contains some small and locally restricted regions that appear melted and recrystallized.

Geochemistry: albitic feldspar: An11.7±2.7Ab81.5±5.5Or6.6±7.4, n=8

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):76
Pieces:1
Class:LL7
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):28.8±0.3 (n=16)
Ferrosilite (mol%):23.9±0.2 (n=13)
Wollastonite (mol%):2.0±0.8 (n=13)
Classifier:A. Greshake, MNB
Type spec mass (g):15.5
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Public domain photographs:
Ansgar Greshake      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6729 approved meteorites from (Northwest Africa) (plus 2025 unapproved names)

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