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Northwest Africa 10627
Basic information Name: Northwest Africa 10627
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10627
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 85.9 g
Meteoritical Bulletin:  MB 105  (2016)  LL3
Recommended:  LL3    [explanation]

This is 1 of 371 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 13 Apr 2016
Writeup from MB 105:

Northwest Africa 10627 (NWA 10627)

(Northwest Africa)

Purchased: 2010

Classification: Ordinary chondrite (LL3)

History: One stone weighing 85.9 g was found in Morocco in 2010. David Holden acquired the sample from a meteorite prospector in Erfoud 2010.

Physical characteristics: The oriented stone is dark brown and has a flattened, irregular shape. The stone is 80% covered by an oxidized fusion crust that displays shallow regmaglypts and distinct rollover lipping with minor bubbling on the trailing edge. The cut face of the interior of the stone is dark in color and displays small chondrules, many of which have FeS rims and a minor amount of interstitial fresh metal.

Petrography: Description and classification (A. Love, App): Sample is dark-colored and displays numerous close-packed unequilibrated chondrules (avg. dia. 678 μm, 153-1943 μm, n=52) and mineral fragments set within a fine-grained opaque matrix. Porphyritic chondrules show zoned phenocrysts and turbid mesostasis. The mesostasis of some porphyritic chondrules contains isotropic glass. Many chondrules display fine-grained rims composed of clastic silicates and metals and sulfides. Clinoenstatite is the dominant form of low-Ca pyroxene. Sample contains melt pockets and polycrystalline troilite.

Geochemistry: (A. Love, App) Olivine Fa16.9±5.7 (Fa6.5-24.6), N=14; Low Ca pyroxene Fs12.3±6.1Wo1.6±0.1 (Fs6.1-24.4, N=10).

Classification: Based on textural relationships using optical, CL and SEM microscope images and mineral compositions, this is an LL3, S4, W2 ordinary chondrite.

Specimens: 3 slices and several small fragments weighing 19.6 g and a polished thin section are on deposit at App.

Data from:
  Table 0
  Line 0:
Date:P 2010
Mass (g):85.9
Shock stage:S4
Weathering grade:W2
Fayalite (mol%):16.9±5.7 (N=14)
Ferrosilite (mol%):12.3±6.1 (N=10)
Wollastonite (mol%):0.9±0.6 (N=10)
Classifier:A. Love, App
Type spec mass (g):19.6
Type spec location:App
Main mass:David Holden
Comments:Submitted by Anthony Love
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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     This is 1 of 7885 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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