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Northwest Africa 6212
Basic information Name: Northwest Africa 6212
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6212
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass:help 375 g
Classification
  history:
Recommended:  LL3-4    [explanation]

This is 1 of 4 approved meteorites classified as LL3-4.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 12 Nov 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 6212 (NWA 6212)

(Northwest Africa)

Purchased: 2008 Feb

Classification: Ordinary chondrite (LL3-4)

Petrography: (K. Metzler, IfP) Genomict ordinary chondrite breccia with low amounts of Fe-Ni metal. The investigated sample contains clasts of petrologic type 4, embedded in high amounts of fine-grained clastic matrix. The latter is composed of unequilibrated and equilibrated chondritic components.

Geochemistry: Mineral compositions and geochemistry: Mean compositions of olivine and low-Ca pyroxene in the various lithologies: Clastic matrix: Fa21.5±10.2 (Fa2.1-30.8); n=15; Fs13.2±7.6Wo0.4±0.4 (Fs2.3-24.6Wo0.0-1.8); n=19. Type 4 clast: Fa30.5±0.4 (Fa29.5-31.1) n=20; Fs14.7±6.5Wo0.6±0.4 (Fs6.0-23.6Wo0.2-1.7; n=17).

Classification: LL chondrite, based on the olivine composition in the type 4 clast and the low metal content. Petrologic type of the clast based on the equilibrated state of olivine and unequilibrated state of low-Ca pyroxene.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2008 Feb
Mass (g):375
Pieces:1
Class:LL3-4
Shock stage:C-S2
Weathering grade:W0/1
Fayalite (mol%):21.5±10.2; 30.5±0.4
Ferrosilite (mol%):13.2±7.6;14.7±6.5
Wollastonite (mol%):0.4±0.4; 0.6±0.4
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Michael Cottingham
Comments:Submitted by K. Metzler, IfP
Institutions
   and collections		 IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Anthony James   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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