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Northwest Africa 8743
Basic information Name: Northwest Africa 8743
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8743
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 2.53 kg
Meteoritical Bulletin:  MB 104  (2015)  Eucrite-melt breccia
Recommended:  Eucrite-melt breccia    [explanation]

This is 1 of 71 approved meteorites classified as Eucrite-melt breccia.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 27 Feb 2015
Writeup from MB 104:

Northwest Africa 8743 (NWA 8743)

(Northwest Africa)

Purchased: 2014

Classification: HED achondrite (Eucrite, melt breccia)

History: A stone was found in northwest Africa. Moroccan dealer Mohammed Sbai sold the stone to an anonymous collector at the Changsha mineral show in May 2014.

Physical characteristics: Single pie-shaped stone has patchy dark-gray irregular surface. Fusion crust is not preserved.

Petrography: (C. A. Lorenz, Vernad) The rock is a breccia consisting of coarse-grained gabbro fragments (33 vol%) up to 6 × 3 cm and minor fragments of fine-grained pyroxene-feldspar rocks. The rock fragments are embedded into a fine-grained matrix full of fine mineral and rock fragments. The matrix consists of pyroxene and feldspar needles which form a graphic intergrowth.

Geochemistry: (N. N. Kononkova, Vernad, EMP) coarse-grained gabbro-pyroxene Fs57.6Wo4.5 (N=10; Fe/Mn = 30.6) Fs55.0-60.3Wo2.2-7.6; feldspar An91.0Ab8.6 (N=12).

Classification: Eucrite melt breccia

Specimens: A total of 254.1 g (213.3 g cut piece and 40.8 g slice), one thin section and one thick polished section are on deposit at Vernad. An anonymous collector holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:China
Date:P 2014
Mass (g):2531
Class:Eucrite-melt breccia
Ferrosilite (mol%):57.6
Wollastonite (mol%):4.5
Classifier:C. A. Lorenz, Vernad
Type spec mass (g):254.1
Type spec location:Vernad
Main mass:anonymous
Comments:Analyst N.N. Kononkova, Vernad; submitted by C. A. Lorenz
   and collections
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Ryan Upchurch   

     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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