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Northwest Africa 11786
Basic information Name: Northwest Africa 11786
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11786
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 417 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 267 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 26 May 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11786 (NWA 11786)

(Northwest Africa)

Purchased: 30 Aug 2015

Classification: HED achondrite (Eucrite, monomict)

History: Purchased by Jay Piatek from a Moroccan meteorite dealer.

Physical characteristics: Single stone, no fusion crust. Exterior shows, dark gray, fine grained texture.

Petrography: (C. Agee, UNM) (C. Agee, UNM) Microprobe examination shows approximately 60% pyroxene and 35% plagioclase. Shock melt veins and mild brecciation are present. Accessory troilite, chromite, silica, and ilmenite were detected.

Geochemistry: (C. Agee, UNM) Low-Ca pyroxene Fs59.0±2.1Wo5.2±2.5, Fe/Mn=31±1, n=1; high-Ca pyroxene Fs27.6±1.3Wo42.4±1.5, Fe/Mn=31±3, n=4; plagioclase An89.7±0.7, n=2.

Classification: Eucrite, monomict

Specimens: 22 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 30 Aug 2015
Mass (g):417
Pieces:1
Class:Eucrite-mmict
Shock stage:high
Weathering grade:moderate
Ferrosilite (mol%):59.0±2.1, 27.6±1.3
Wollastonite (mol%):5.2±2.5, 42.4±1.5
Classifier:C. Agee, UNM
Type spec mass (g):22
Type spec location:UNM
Main mass:Jay Piatek
Comments:Field name JP-76; 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 8674 approved meteorites from (Northwest Africa) (plus 1882 unapproved names)

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