Meteoritical Bulletin: Entry for Northwest Africa 10822

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Northwest Africa 10822

Basic information

Name: Northwest Africa 10822
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10822
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 56 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	Lunar (feldsp. breccia)
Recommended:			Lunar (feldsp. breccia) [explanation]

This is 1 of 271 approved meteorites classified as Lunar (feldsp. breccia). [show all]
Search for other: Lunar meteorites

Comments:

Approved 10 Oct 2016

Writeup

help

Writeup from MB 105:

Northwest Africa 10822 (NWA 10822)

(Northwest Africa)

Purchased: 2016

Classification: Lunar meteorite (feldspathic breccia)

History: Reportedly found in 2015, purchased by Matt Morgan and Lee Morgan in Morocco on June 26, 2016.

Physical characteristics: Single stone; saw cuts reveal a feldspathic breccia with numerous white feldspar clasts (1-4 mm) set in a dark-gray matrix. There are also scattered orange-brown clasts up to ~4 mm that consist primarily of pyroxene.

Petrography: (C. Agee, UNM) This meteorite is mixture of a fine-grained domains, large fragmental plagioclase crystals, and shock melt veins; some of the veins have ~100 μm-size vesicles. There are orange-brown domains consisting of pigeonite grains with augite exsolution lamellae and interstitial plagioclase or melt veins.

Geochemistry: (C. Agee and M.Spilde, UNM) olivine Fa_32.7±9.0, Fe/Mn=97±4, n=11; pigeonite Fs_40.7±4.8Wo_8.2±3.5, Fe/Mn=59±6, n=5; augite Fs_24.9±14.2Wo_37.6±4.7, Fe/Mn=53±10, n=5; orange-brown pyroxene: pigeonite Fs_36.4±1.6Wo_5.2±3.0, Fe/Mn=61±6, n=4; augite Fs_18.3±0.3Wo_39.4±0.3, Fe/Mn=54±9, n=2; plagioclase An_96.4±0.7Ab_3.5±0.7Or_0.1±0.1, n=6.

Classification: Lunar (feldspathic breccia)

Specimens: 11.7 g including a probe mount on deposit at UNM, MtMorgan and Lee Morgan hold the main mass.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2016
Mass (g):	56
Pieces:	1
Class:	Lunar (feldsp. breccia)
Shock stage:	high
Weathering grade:	moderate
Fayalite (mol%):	32.7±9.0
Ferrosilite (mol%):	40.7±4.8, 24.9±14.2
Wollastonite (mol%):	8.2±3.5, 37.6±4.7
Classifier:	C. Agee, UNM
Type spec mass (g):	11.7
Type spec location:	UNM
Main mass:	Matt Morgan and Lee Morgan
Comments:	Fieldname MM49; submitted by C. Agee

Institutions
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)

Catalogs:

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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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8402 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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