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Northwest Africa 11441
Basic information Name: Northwest Africa 11441
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11441
Observed fall: No
Year found: 2007
Country: (Northwest Africa)
Mass:help 599 g
Meteoritical Bulletin:  MB 106  (2018)  L6-melt breccia
Recommended:  L6-melt breccia    [explanation]

This is 1 of 70 approved meteorites classified as L6-melt breccia.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 13 Oct 2017
Writeup from MB 106:

Northwest Africa 11441 (NWA 11441)

(Northwest Africa)

Purchased: 2007 June

Classification: Ordinary chondrite (L6, melt breccia)

History: Purchased from a Moroccan dealer at the meteorite fair in Ensisheim, France

Physical characteristics: Single rounded stone of brown color without fusion crust.

Petrography: (K. Metzler, IfP) Ordinary chondrite melt breccia, dominated by subrounded mm- to cm-sized chondritic clasts. The clasts are embedded in a matrix of black crystallized melt, containing tiny metal and sulfide beads. Clasts are strongly recrystallized with relict chondrule outlines. Secondary feldspar grains >50 µm.

Geochemistry: Mineral compositions and geochemistry: (K. Metzler, IfP) The mean olivine composition is Fa24.3±0.3 (Fa23.9-24.7); n=14. The mean low-Ca pyroxene composition is Fs20.5±0.3Wo1.6±0.3 (Fs20.0-21.1Wo1.1-2.0), n=15.

Classification: Melt breccia based on texture and the existence of melt matrix. L chondrite based on mineral chemistry of clasts. Petrologic type of clasts based on the equilibrated state of olivine and pyroxene and the large grain size of secondary plagioclase (>50 µm).

Data from:
  Table 0
  Line 0:
Date:P 2007 June
Mass (g):599
Class:L6-melt breccia
Shock stage:S4
Weathering grade:W2-3
Fayalite (mol%):24.3
Ferrosilite (mol%):20.5
Wollastonite (mol%):1.6
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Anonymous
Comments:Submitted by K. Metzler, IfP
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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