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Northwest Africa 11969
Basic information Name: Northwest Africa 11969
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11969
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 942 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  Eucrite-unbr
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 104 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 23 Sep 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11969 (NWA 11969)

(Northwest Africa)

Purchased: 2015

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased by Jay Piatek on December 28, 2015 from a Moroccan meteorite dealer.

Physical characteristics: Single stone, saw cut show medium grained, equigranular, basaltic texture.

Petrography: (C. Agee, UNM) (C. Agee, UNM) Microprobe examination shows approximately 50% pyroxene and 50% plagioclase. Pyroxene grains show exsolution lamellae. Accessory troilite, chromite, silica, and ilmenite were detected.

Geochemistry: (C. Agee, UNM) Low-Ca pyroxene Fs59.4±1.0Wo3.5±1.6, Fe/Mn=30±1, n=3; high-Ca pyroxene Fs33.7±8.6Wo35.2±11.4, Fe/Mn=31±4, n=3; plagioclase An89.6±0.3, n=3.

Classification: Eucrite, unbrecciated

Specimens: 21 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):942
Pieces:1
Class:Eucrite-unbr
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):59.4±1.0, 33.7±8.6
Wollastonite (mol%):3.5±1.6, 35.2±11.4
Classifier:C. Agee, UNM
Type spec mass (g):21
Type spec location:UNM
Main mass:Jay Piatek
Comments:Field name JP-401; 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:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7655 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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