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Northwest Africa 8182
Basic information Name: Northwest Africa 8182
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8182
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 15.6 g
Meteoritical Bulletin:  MB 103  (2014)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 288 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 30 Jan 2014
Writeup from MB 103:

Northwest Africa 8182 (NWA 8182)

(Northwest Africa)

Purchased: 2013

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Matt Morgan in 2013, reportedly found in Algeria.

Physical characteristics: Single stone, complete, dome shaped, remnants of brown-black fusion crust. Saw cut reveals a range of clast and fragmental feldspar sizes set in dark fine grained matrix, dark gray shock melt veins throughout.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows two main types of breccia: 1) cataclastic breccia with densely packed olivine, pyroxene and plagioclase fragments and abundant vesiculated shock melt veins, 2) feldspathic breccia with primarily fragmental plagioclase set in a very fine-grained matrix. Chromite, ilmenite, zircon, phosphate, silica, and sulfide observed.

Geochemistry: C. Agee and N. Muttik, UNM). Olivines are fairly uniformly Mg-rich, olivine Fa36.5±7.1, Fe/Mn=99±10, n=31. Some plagioclase has relatively high albite content, An93.4±2.2Ab6.2±1.9Or0.4±0.3, range An89.1-96.3, n=12. This specimen appears to have three distinct clinopyroxene populations, likely representing at least three lithologic types: 1) Mg-rich clinopyroxene, Fs32.8±12.3Wo18.6±8.0, Fe/Mn=57±9, n=17; 2) Fe-rich clinopyroxene, Fs51.0±7.9Wo24.3±6.7, Fe/Mn=72±5, n=15; 3) hedenberite, Fs53.1Wo41.6, Fe/Mn=89 + Fs-rich pigeonite, Fs81.0Wo13.0, Fe/Mn=63.

Classification: Achondrite (lunar meteorite). Feldspathic breccia.

Specimens: A total of 3.5 g, including a probe mount, is on deposit at UNM, MtMorgan holds the main mass.

Data from:
  Table 0
  Line 0:
Date:P 2013
Mass (g):15.6
Class:Lunar (feldsp. breccia)
Classifier:C. Agee, UNM
Type spec mass (g):3.5
Type spec location:UNM
Main mass:MtMorgan
Comments:Submitted by C. Agee (UNM)
   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)
MtMorgan: Matt Morgan, Mile High Meteorites, P.O. Box 151293, Lakewood, CO 80215-9293, United States; Website (private address)
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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     This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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