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Northwest Africa 11045
Basic information Name: Northwest Africa 11045
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11045
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 24.8 g
Meteoritical Bulletin:  MB 106  (2018)  L3-6
Recommended:  L3-6    [explanation]

This is 1 of 61 approved meteorites classified as L3-6.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 28 Jun 2017
Writeup from MB 106:

Northwest Africa 11045 (NWA 11045)

(Northwest Africa)

Purchased: 2011

Classification: Ordinary chondrite (L3-6)

History: One mostly crusted stone with a mass 24.8 g was found and purchased in Morocco in 2011. The sample was acquired from prospector David Holden in 2011.

Physical characteristics: A dark-brown weathered fusion crust covers approximately 98% of the stone. The stone is oriented with an obvious nose cone leading edge and trailing edge with with roll-over lipping and frothing.

Petrography: Description and classification (T. Anderson, App): Sample is a breccia composed of equilibrated clasts (ranging from type 5 to type 6) set within a host of unequilibrated, well-defined CC, BO, PP, GOP, Poik OP, POP, PO and RP chondrules and fragments with an average diameter of 746 μm (n=44). Accessory minerals are apatite, chromite, troilite and ~7 vol% Fe-Ni metal. Some unequilibrated chondrules contain isotropic glassy mesostasis.

Geochemistry: (T. Anderson, App) Host: Olivine Fa21.5±12.4 (4.8-32.9 N=7); Low Ca pyroxene Fs11.2±4.4Wo3.6±5.7 (Fs4.8-19.3Wo0.64-17.4, N=10), Clasts: Olivine Fa23.6±0.4, N=8; Low Ca pyroxene Fs19.8±0.8Wo1.9±0.4, N=12.

Classification: Based on textures and mineral compositions this is an ordinary chondrite breccia composed of type 5 and 6 clasts set within a host on unequilibrated chondrules (L3-6, S4, W2).

Specimens: Two endpieces whose masses total 17.27 g and one polished thin section are on deposit at App.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2011
Mass (g):24.8
Shock stage:S4
Weathering grade:W2
Fayalite (mol%):21.5±12.4, N=7; 23.6±0.4 (N=8)
Ferrosilite (mol%):11.2±4.4, N=10; 19.8±0.8 (N=12)
Wollastonite (mol%):3.6±5.7; 1.9±0.4
Classifier:T. Anderson, App
Type spec mass (g):17.3
Type spec location:App
Main mass:App
Comments:Submitted by Anthony Love
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
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 8636 approved meteorites from (Northwest Africa) (plus 1884 unapproved names)

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