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Northwest Africa 13166
Basic information Name: Northwest Africa 13166
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13166
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 400 g
Classification
  history:
Recommended:  Eucrite-melt breccia    [explanation]

This is 1 of 31 approved meteorites classified as Eucrite-melt breccia.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 9 Feb 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13166 (NWA 13166)

(Northwest Africa)

Purchased: 2019

Classification: HED achondrite (Eucrite, melt breccia)

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

Physical characteristics: Dark-grayish rock with some fusion crust.

Petrography: The meteorite is a eucrite-melt breccia composed of up to 1.5 cm sized basaltic clasts set into black melt rock matrix. Basaltic clasts consist of exsolved pyroxenes and often lath shaped calcic plagioclase up to 1.5 mm in size. The fine-grained melt rock is mostly recrystallized and mineral grains in contact with the melt are partly resorbed; some regions show flow textures. Minor phases include silica, chromite, ilmenite, FeS, and barite. No metallic iron has been detected.

Geochemistry: low-Ca pyroxene: Fs59.2±0.5Wo2.2±0.1 (Fs58.4-59.8Wo2.0-2.4, FeO/MnO=25-28, n=14); Ca-pyroxene: Fs25.7±0.9Wo43.8±0.8 (Fs24.4-27.7Wo41.9-43.8, FeO/MnO=25-34, n=13); calcic plagioclase: An90.3±1.1 (An88.9-92.1, n=13)

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2019
Mass (g):400
Pieces:1
Class:Eucrite-melt breccia
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):59.2; 25.7
Wollastonite (mol%):2.2; 43.8
Classifier:A. Greshake, MNB
Type spec mass (g):20.8
Type spec location:MNB
Main mass:Marcin Cimala
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. 109, in preparation (2020)
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)
Marcin Cimala      
Woreczko Jan & Wadi      
Public domain photographs:
Ansgar Greshake   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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