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Northwest Africa 11909
Basic information Name: Northwest Africa 11909
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11909
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 590 g
Classification
  history:
Recommended:  Diogenite    [explanation]

This is 1 of 414 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 2 Sep 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11909 (NWA 11909)

(Northwest Africa)

Purchased: 2018

Classification: HED achondrite (Diogenite)

History: Darryl Pitt purchased from Said Haddany at the Tucson Gem and Mineral Show in January 2018

Physical characteristics: Single stone, weathered exterior, coarse grained, green crystals with some iron staining.

Petrography: (C. Agee, UNM) Microprobe examination reveals an orthopyroxenite with minor amounts of chromite and sulfide; plagioclase and olivine are absent. Highly equilibrated and relatively low shock.

Geochemistry: (C. Agee, UNM) low-Ca pyroxene, Fs23.2±0.3Wo1.8±0.1, Fe/Mn=25±1, n=10.

Classification: Diogenite

Specimens: 20.1 g on deposit at UNM, MMGM holds the main mass.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2018
Mass (g):589.6
Pieces:1
Class:Diogenite
Shock stage:low
Weathering grade:moderate
Ferrosilite (mol%):23.2±0.3
Wollastonite (mol%):1.8±0.1
Classifier:C. Agee, UNM
Type spec mass (g):20.1
Type spec location:UNM
Main mass:MMGM
Comments:MVCH-336; 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)
MMGM: Maine Mineral and Gem Museum, PO Box 500, 99 Main St., Bethel, ME 04217, United States (institutional address; updated 30 Aug 2014)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6407 approved meteorites from (Northwest Africa) (plus 2023 unapproved names)

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