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Northwest Africa 12181
Basic information Name: Northwest Africa 12181
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12181
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 930 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  L4-melt breccia
Recommended:  L4-melt breccia    [explanation]

This is 1 of 8 approved meteorites classified as L4-melt breccia.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 27 Oct 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12181 (NWA 12181)

(Northwest Africa)

Purchased: 2018

Classification: Ordinary chondrite (L4, melt breccia)

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

Physical characteristics: Dark brownish individual lacking any fusion crust.

Petrography: The meteorite is a breccia composed of large regions of recrystallized shock melt containing characteristic FeNi metal and sulfide globules and regions displaying chondritic textures with well preserved chondrules. In chondritic portions olivine is compositionally equilibrated and pyroxene is unequilibrated.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):930
Pieces:1
Class:L4-melt breccia
Shock stage:S4
Weathering grade:W1
Fayalite (mol%):24.3±0.2 (n=11)
Ferrosilite (mol%):18.0±3.2 (10.1-20.3, n=19)
Wollastonite (mol%):0.7±0.3 (0.3-1.5, n=19)
Magnetic suscept.:4.87
Classifier:A. Greshake, MNB
Type spec mass (g):35
Type spec location:MNB
Main mass:Marcin Cimala
Comments:Morocco; 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. 107, MAPS 55, 460-462
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Woreczko Jan & Wadi      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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