Meteoritical Bulletin: Entry for Northwest Africa 11966

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Northwest Africa 11966

Basic information

Name: Northwest Africa 11966
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11966
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 157.1 g

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	Lunar (Feldsp. Breccia)
Recommended:			Lunar (Feldsp. Breccia) [explanation]

This is 1 of 201 approved meteorites classified as Lunar (Feldsp. Breccia). [show all]
Search for other: Lunar meteorites

Comments:

Approved 23 Sep 2018

Writeup

help

Writeup from MB 107:

Northwest Africa 11966 (NWA 11966)

(Northwest Africa)

Purchased: 2015

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Jay Piatek on April 27, 2015 from a Moroccan meteorite dealer.

Physical characteristics: Single stone, fresh fusion-crusted exterior. A saw cut reveals a fragmental breccia with many white feldspathic clasts and a large lithic clast set in a dark-gray groundmass.

Petrography: (C. Agee, UNM) This meteorite is a breccia of fragmental pyroxene, olivine, plagioclase grains. There are many domains that are fine-grained and cataclastic with shock melt and vesicles.

Geochemistry: (C. Agee, UNM) olivine Fa_35.8±5.0, Fe/Mn=98±11, n=10; pigeonite Fs_33.6±5.3Wo_12.6±6.8, Fe/Mn=58±3, n=8; augite Fs_29.0±2.9Wo_34.8±4.3, Fe/Mn=57±1, n=2; plagioclase An_96.4±0.9, n=7; Shock melt (20 μm defocused electron beam, proxy for bulk meteorite composition): SiO₂=43.4±0.4, TiO₂=0.18±0.06, Al₂O₃=31.0±1.2, Cr₂O₃=0.06±0.03, MgO=3.0±0.6, FeO=3.6±0.8, MnO=0.05±0.03, CaO=17.5±0.5, Na₂O=0.35±0.04, K₂O=0.07±0.02 (all wt%), n=7.

Classification: Lunar feldspathic breccia

Specimens: 20.1 g including a probe mount on deposit at UNM, Jay Piatek holds the main mass.

Data from:
  MB107
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2015
Mass (g):	157.13
Pieces:	1
Class:	Lunar (Feldsp. Breccia)
Shock stage:	high
Weathering grade:	low
Fayalite (mol%):	35.8±5.0
Ferrosilite (mol%):	33.6±5.3, 29.0±2.9
Wollastonite (mol%):	12.6±6.8, 34.8±4.3
Classifier:	C. Agee, UNM
Type spec mass (g):	20.1
Type spec location:	UNM
Main mass:	Jay Piatek
Comments:	Field name JP-84; submitted by C. Agee, UNM

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)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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