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Northwest Africa 11521
Basic information Name: Northwest Africa 11521
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11521
Observed fall: No
Year found: 2017
Country: Moroco
Mass:help 50 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 501 approved meteorites classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 2 Dec 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11521 (NWA 11521)

Moroco

Purchased: 2017

Classification: Carbonaceous chondrite (CO3)

History: A single piece with a mass of 50 g was bought in 2017 from a Moroccan meteorite dealer in Ensisheim, France.

Physical characteristics: Fresh-looking individual with black (fusion) crust.

Petrography: The meteorite shows a chondritic texture of abundant small chondrules, metals, sulfides, CAIs, and mineral fragments embedded into a fine-grained greyish and porous matrix. Chondrules are dominantly porphyritic and typically 0.1-0.2 mm in diameter. Sulfides and FeNi metal are fresh and present in matrix and chondrules.

Geochemistry: Mineral compositions and geochemistry: Olivine (mean: Fa 18.7±14.6, range: Fa0.4-38.4, n=33), low-Ca pyroxene (mean Fs4.8±3.4Wo2.7±2.2, range: Fs0.6-11.8Wo0.4-7.4, n=24)

Classification: The textural observations suggest a CO3 classification of this rock. The olivines show undulatory extinction. Thus, the rock is of shock stage S2. The sample is only slightly weathered.

Data from:
  MB107
  Table 0
  Line 0:
Origin or pseudonym:Desert
Place of purchase:Ensisheim, France
Date:P 2017
Mass (g):50
Pieces:1
Class:CO3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):18.7±14.6 (n=33)
Ferrosilite (mol%):4.8±3.4 (n=24)
Wollastonite (mol%):2.7±2.2 (n=24)
Classifier:Kerstin Klemm, Addi Bischoff, IfP
Type spec mass (g):10.1
Type spec location:IfP
Main mass:Sergey Vassiliev
Finder:unknown
Comments:Field name: SV2017-01; submitted by Samuel Ebert; submitted by Ebert S.
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:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is the only approved meteorite from Moroco

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