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Northwest Africa 11833
Basic information Name: Northwest Africa 11833
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11833
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 29 g
Classification
  history:
Recommended:  Diogenite    [explanation]

This is 1 of 434 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 17 Jul 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11833 (NWA 11833)

(Northwest Africa)

Purchased: 2018

Classification: HED achondrite (Diogenite)

History: The meteorite was purchased from a local meteorite dealer in Morocco.

Physical characteristics: Light-grayish individual with patches of fusion crust.

Petrography: The meteorite is a breccia mainly composed of up to 2 mm sized blocky orthopyroxene grains (mean diameter about 0.8 mm) and related fine-grained mineral debris. Minor phases include calcic plagioclase, chromite, kamacite, and troilite; no nickel free metal has been detected.

Geochemistry: low-Ca pyroxene: Fs28.8±0.3Wo4.1±0.1 (Fs28.3-29.4Wo3.9-4.3, n=14, FeO/MnO=27-31); calcic plagioclase: An93.0±0.7 (An91.9-93.8, n=9)

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):29
Pieces:1
Class:Diogenite
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):28.8
Wollastonite (mol%):4.1
Classifier:A. Greshake, MNB
Type spec mass (g):5.9
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
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 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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