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Northwest Africa 7837
Basic information Name: Northwest Africa 7837
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7837
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 586 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  CR2
Recommended:  CR2    [explanation]

This is 1 of 163 approved meteorites classified as CR2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and CR chondrites
Comments: Approved 6 May 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7837 (NWA 7837)

Morocco

Purchased: 2012

Classification: Carbonaceous chondrite (CR2)

History: Purchased by Aziz Habibi in Morocco, 2012.

Physical characteristics: Single stone, dark weathered irregular surface with chondrules visible through desert patina, saw-cut surface shows many chondrules of variable size, some oxidized, set in a dark-colored matrix.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous porphyritic chondrules some up to 5 mm, some rims decorated with metal/sulfide blebs. Abundant, fine-grained matrix.

Geochemistry: (C. Agee and L. Burkemper, UNM) Ferroan olivine Fa3.8±1.6, range Fa2.2-6.9, Fe/Mn=44±3, Cr2O3=0.13±0.10, CaO=0.17±0.10 wt%, n=25; forsterite olivine Fa1.3±0.5, Cr2O3=0.16±0.12, CaO=0.28±0.21 wt%, n=13; enstatite Fs1.3±0.4Wo1.6±1.4, Fe/Mn=13±8, n=15; diopside Fs1.3±0.8Wo35.0±5.3, Fe/Mn=6±3, n=5; plagioclase Or1.2Ab22.6An76.1.

Classification: Carbonaceous chondrite (CR2).

Specimens: 20.4 g including a probe mount on deposit at UNM, Aziz Habibi holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2012
Mass (g):586
Pieces:1
Class:CR2
Fayalite (mol%):3.8±1.6, 1.3±0.5
Ferrosilite (mol%):1.3±0.4
Wollastonite (mol%):1.6±1.4
Classifier:C. Agee, UNM
Type spec mass (g):20.4
Type spec location:UNM
Main mass:Aziz Habibi
Comments:Submitted by C. Agee
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. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Piotr gural100      
Volker Heinrich   
Wang Ziyao      
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1386 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)

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