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Northwest Africa 8710
Basic information Name: Northwest Africa 8710
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8710
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 210 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  H3
Recommended:  H3    [explanation]

This is 1 of 594 approved meteorites (plus 2 unapproved names) classified as H3.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 6 Jan 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8710 (NWA 8710)

(Northwest Africa)

Purchased: 2014

Classification: Ordinary chondrite (H3)

History: One subrounded stone weighing 210 g was found in Morocco in 2014. David Holden acquired the sample from a meteorite prospector in Erfoud 2014.

Physical characteristics: The stone is dark brown and has a rounded-angular shape and displays a few shallow regmaglypts and a discontinuous rollover lip on the trailing edge. The oriented stone is ~60% covered by weathered fusion crust. The cut face of the interior of the stone is dark brown and shows numerous well-defined chondrules, clasts, a solitary lithic fragment and fresh flakes of metal.

Petrography: Description and classification (A. Love, App): Sample displays numerous close-packed unequilibrated chondrules of varying size (avg. diameter 482.35 μm, n=131, 106-1935 μm). FeNi and FeS metals grains set in a fine-grained matrix. Many porphyritic chondrules display turbid mesostasis while some chondrules contain isotropic glass, rounded nuggets of FeNi and FeS metals and relict grains. Many chondrules display fine grained rims of FeS. The clastic matrix contains mixed metal assemblages.

Geochemistry: (A. Love, App) Fa15.4±5.6 (Fa1.0-25.3, N=18, Fe/Mn=44.8); Low Ca pyroxene, Fs16.3±9.8Wo1.3±1.2 (Fs4.4-34.0Wo0.5-4.3, N=15).

Classification: Ordinary Chondrite (H3, S3, W2). Based on ranges of Fa and Fs values of olivines and pyroxenes, sample is an H chondrite. Presence of isotropic glass and zoned olivines in some porphyritic chondrules, dark red and magenta CL of olivines and pyroxenes, indicate the sample is an unequilibrated H chondrite.

Specimens: Five slices weighing 26.31 g, a polished mount and one polished thin section are currently on deposit at App.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2014
Mass (g):210
Pieces:1
Class:H3
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):15.4±5.9 (N=18)
Ferrosilite (mol%):16.2±9.0 (N=15)
Wollastonite (mol%):1.2±1.0
Classifier:A. Love, App
Type spec mass (g):26.31
Type spec location:App
Main mass:David Holden
Finder:Anonymous
Comments:Submitted by Anthony Love
Institutions
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7009 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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