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Northwest Africa 12289
Basic information Name: Northwest Africa 12289
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12289
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 145 g
Classification
  history:
Recommended:  L5-melt breccia    [explanation]

This is 1 of 18 approved meteorites classified as L5-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 11 Dec 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12289 (NWA 12289)

(Northwest Africa)

Purchased: 2018

Classification: Ordinary chondrite (L5, melt breccia)

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

Physical characteristics: Brownish individual without fusion crust.

Petrography: The meteorite is a melt breccia composed of abundant recrystallized shock melt regions with characteristic FeNi metal and sulfide globules and embedded relict mineral fragments and some preserved chondrules. In chondritic portions olivine and low-Ca pyroxene are compositionally equilibrated and the plagioclase grain size is about 30 μm.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Errachidia, Morocco
Date:P 2018
Mass (g):145
Pieces:1
Class:L5-melt breccia
Shock stage:S2, melt
Weathering grade:W3
Fayalite (mol%):24.1±0.4 (n=22)
Ferrosilite (mol%):20.3±0.2 (n=16)
Wollastonite (mol%):1.4±0.2 (n=16)
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Said Yousfi
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. 107, in preparation (2018)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6916 approved meteorites from (Northwest Africa) (plus 2027 unapproved names)

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