header
  MetSoc Home            Publications            Search Meteorites  
Search the Meteoritical Bulletin Database
Last update: 28 Jun 2017
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 11202
Basic information Name: Northwest Africa 11202
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11202
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 117.5 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 419 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 21 Apr 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11202 (NWA 11202)

(Northwest Africa)

Purchased: Mar 2016

Classification: Ureilite

History: Purchased by Brahim Tahiri in Morocco and sent to his partner Sean Tutorow for analysis.

Physical characteristics: Weathered, dark-colored exterior; saw cut reveals dark gray mosaic of silicate grains, most in the size range ~0.5 mm.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows a texturally equilibrated mix of polygonal olivine and pyroxene grains bounded by metal and oxidized metal veinlets. Ubiquitous, lens shaped graphite grains were observed. Olivines did not have dramatic reduction rims.

Geochemistry: (C. Agee and B. Ha, UNM) Olivine Fa15.0±0.9, Fe/Mn=55±3, Cr2O3=0.51±0.03 (wt%), n=7; pigeonite, Fs14.1±1.7Wo4.7±0.1, Fe/Mn=20±4, n=3; augite, Fs9.4±3.8Wo37.0±1.4, Fe/Mn=17±8, n=7.

Classification: Augite bearing ureilite

Specimens: 20.1 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Northwest Africa
Date:P Mar 2016
Mass (g):117.47
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):15.0±0.9
Ferrosilite (mol%):14.1±1.7, 9.4±3.8
Wollastonite (mol%):4.7±0.1, 37.0±1.4
Classifier:C. Agee, UNM
Type spec mass (g):20.1
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G683; submitted by C. Agee, UNM
Institutions
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 106, in preparation (2017)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 5851 approved meteorites from (Northwest Africa) (plus 2066 unapproved names)

Direct link to this page