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Northwest Africa 12483
Basic information Name: Northwest Africa 12483
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12483
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 1100 g
Classification
  history:
Recommended:  Winonaite    [explanation]

This is 1 of 34 approved meteorites classified as Winonaite.   [show all]
Search for other: Primitive achondrites, Winonaites
Comments: Approved 10 Mar 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12483 (NWA 12483)

(Northwest Africa)

Purchased: 2018

Classification: Primitive achondrite (Winonaite)

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

Physical characteristics: Several brownish individuals without fusion crust.

Petrography: The meteorite displays a recrystallized texture with frequent 120 degree triple junctions and is dominantly composed of typically 100 to 200 µm sized enstatite, forsteritic olivine, and augite grains, with enstatite being the most abundant mineral phase. Minor phases include kamacite, schreibersite, daubreelite, and troilite. No chondrules present.

Geochemistry: olivine: Fa1.4±0.3 (Fa0.7-1.9, n=12, FeO/MnO=7±1); low-Ca pyroxene: Fs3.0±0.1Wo1.3±0.1 (Fs2.8-3.3Wo1.0-1.4, n=11, FeO/MnO=8±1); Ca-pyroxene: Fs1.5±0.2Wo44.2±0.4 (Fs1.2-1.9Wo43.7-45.1, n=12, FeO/MnO=6±1)

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):1100
Pieces:several
Class:Winonaite
Shock stage:S1
Weathering grade:strong
Fayalite (mol%):1.4
Ferrosilite (mol%):3.0; 1.5
Wollastonite (mol%):1.3; 44.2
Magnetic suscept.:4.53
Classifier:A. Greshake, MNB
Type spec mass (g):21.8
Type spec location:MNB
Main mass:Saeed Hada
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6672 approved meteorites from (Northwest Africa) (plus 2024 unapproved names)

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