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Northwest Africa 13200
Basic information Name: Northwest Africa 13200
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13200
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 555 g
Classification
  history:
Recommended:  L3    [explanation]

This is 1 of 704 approved meteorites classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 16 Feb 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13200 (NWA 13200)

(Northwest Africa)

Purchased: 2019 Mar

Classification: Ordinary chondrite (L3)

History: Purchased from a dealer in Morocco in March 2019.

Physical characteristics: The fusion crust has a dark color.

Petrography: (D. Souza , UBayr). Chondrules have an apparent diameter of around 500 µm (N = 30) making up ~80% in vol. of the meteorite. Chondrules are principally porphyritic pyroxene (PP), olivine (PO) and granular olivine-pyroxene (GOP). Radial pyroxene and are also present in smaller amounts. The matrix is composed mainly of olivine which presents undulatory extinction and pyroxenes. Metal and troilite have oxidized rims. Metal content in thin section is ~8% in volume.

Geochemistry: Mineral compositions and Geochemistry: Olivine (Fa25.1±3.2 ; Cr2O3 in ferroan examples 0.1±0.07 wt.%; Fe/Mn = 54±9 ; N=13). Orthopyroxene (Fs17.8±3.6; Fe/Mn = 28±11; N = 12).

Classification: Ordinary chondrite (L3, S2, W2).

Specimens: 27.7g at UBayr including a thin section. S. Tutorow holds the main mass.

Data from:
  MB109
  Table 0
  Line 0:
Date:P 2019 Mar
Mass (g):555.1
Pieces:1
Class:L3
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):25.1±3.2 (N=13)
Ferrosilite (mol%):17.8±3.6 (N=12)
Wollastonite (mol%):0.7±0.5 (N=12)
Classifier:D. Souza, UBayr
Type spec mass (g):27.7
Type spec location:UBayr
Main mass:S. Tutorow
Finder:Unknown
Comments:Field name G724.; submitted by A. Bouvier, UBayr
Institutions
   and collections
UBayr: Bayerisches Geoinstitut, University of Bayreuth, D-95440 Bayreuth, Germany (institutional address; updated 5 Feb 2020)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7271 approved meteorites from (Northwest Africa) (plus 1984 unapproved names)

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