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Northwest Africa 7979
Basic information Name: Northwest Africa 7979
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7979
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 131.8 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  R5
Recommended:  R5    [explanation]

This is 1 of 37 approved meteorites classified as R5.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 4-7)
Comments: Approved 12 Sep 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7979 (NWA 7979)

Morocco

Purchased: 2013

Classification: Rumuruti chondrite (R5)

History: Purchased by Brahim Tahiri from a Moroccan hunter and sent to Sean Tutorow for classification, 2012.

Physical characteristics: Thirty two small matching stones, light brown, weathered exterior exterior, scattered light-colored chondrules up to 3 mm, set in a gray groundmass with ubiquitous fine-grained opaques.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows some equilibrated chondrules set in an olivine-rich matrix, a few chondrule olivines have magnesian cores.

Geochemistry: (C. Agee and N. Muttik, UNM) Olivine Fa39.8±0.3, Fe/Mn=87±6, NiO=0.18± wt%, n=6; olivine magnesian core Fa15.6, Fe/Mn=73; low-Ca pyroxene Fs20.6±0.3Wo0.9±0.4, Fe/Mn=66±17, n=4, augite Fs15.0±6.6Wo36.1±14.5, Fe/Mn=50±6, Cr2O3=0.63±0.23 wt%, Na2O=0.51±0.23 wt%.

Classification: Rumuruti chondrite (R5)

Specimens: 21.1 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2013
Mass (g):131.8
Pieces:32
Class:R5
Fayalite (mol%):39.8±0.3
Ferrosilite (mol%):20.6±0.3
Wollastonite (mol%):0.9±0.4
Classifier:C. Agee, UNM
Type spec mass (g):21.1
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G-411; 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
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Hans-Christof Gruber   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1847 approved meteorites from Morocco (plus 24 unapproved names) (plus 1 impact crater)

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