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Northwest Africa 7129
Basic information Name: Northwest Africa 7129
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7129
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 50 g
Classification
  history:
Meteoritical Bulletin:  MB 101  (2012)  Achondrite-ung
Recommended:  Achondrite-ung    [explanation]

This is 1 of 84 approved meteorites classified as Achondrite-ung.   [show all]
Search for other: Achondrites, Ungrouped achondrites
Comments: Approved 18 Dec 2012
Writeuphelp
Writeup from MB 101:

Northwest Africa 7129 (NWA 7129)

(Northwest Africa)

Purchased: 2011 Sep

Classification: Ungrouped achondrite

History: Purchased by Gary Fujihara from a Moroccan dealer in September 2011.

Petrography: (A. Irving and S. Kuehner, UWS) Very fresh granular aggregate of very finely exsolved, pinkish-brown pyroxene, polygranular calcic plagioclase, sparse twinned plagioclase laths, ilmenite, minor ferroan olivine, pyrrhotite and Ni-free metal. A blade of baddeleyite was found in one ilmenite grain.

Geochemistry: Olivine (Fa82.2-82.7, FeO/MnO = 81-85), low-Ca pyroxene host (Fs63.9Wo6.0), FeO/MnO = 63) with high-Ca pyroxene lamellae (Fs35.0Wo38.6, FeO/MnO =63), high-Ca pyroxene host (Fs41.1Wo32.1, FeO/MnO = 67) with low-Ca pyroxene lamellae (Fs62.3Wo7.9, FeO/MnO = 66).

Classification: Achondrite, ungrouped. Paired with NWA 011, NWA 2400, NWA 2976, NWA 4587, NWA 4901 and NWA 5644.

Specimens: 10 g of type material and one polished thin section are on deposit at UWB. The remaining material is held by Mr. G. Fujihara.

Data from:
  MB101
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2011 Sep
Mass (g):50
Pieces:1
Class:Achondrite-ung
Shock stage:low
Weathering grade:low
Fayalite (mol%):82.2-82.7
Ferrosilite (mol%):62.3-63.9; 35.0-41.1
Wollastonite (mol%):7.9-6.0; 38.6-32.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):10
Type spec location:UWB
Main mass:G. Fujihara
Comments:GF11-17; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, 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)
Aeroliths Collection Theodossiou   
Christophe PICQ   
Gregor H.   
Jean-Michel Masson   
Woreczko Jan & Wadi      
Public domain photographs:
Gary Fujihara   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6781 approved meteorites from (Northwest Africa) (plus 2047 unapproved names)

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