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Northwest Africa 13177
Basic information Name: Northwest Africa 13177
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13177
Observed fall: No
Year found: 2019
Country: Morocco
Mass:help 1247 g
Classification
  history:
Recommended:  L3-6    [explanation]

This is 1 of 59 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 4 Jul 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13177 (NWA 13177)

Morocco

Find: 2019

Classification: Ordinary chondrite (L3-6)

History: Fabien Kuntz purchased 28 stones (ranging 4.8-338 g) in Guelmin, Morocco, in 2019.

Physical characteristics: Sample has an irregular ovoid shape and is dark brown in color. Chondrules and brecciated texture are visible on the surface.

Petrography: Description and classification: (A. Love, App): Sample is a breccia composed of light-colored, mm-sized chondritic clasts set within dark-colored, host of unequilibrated and equilibrated chondrules and fragments. Type 4, type 6 and carbonaceous (CM-like) lithologies are present. Chondrules within host are poorly equilibrated and have an average apparent diameter of 523µm (n=56). Additional minerals are albitic plagioclase, chromite, phosphate, FeNi metal and troilite.

Geochemistry: (A.Love, App) Host: Olivine (Fa22.67±3.4, (Fa15.64-27.19), Fe/Mn=46.8±3.5 n=11); low Ca pyroxene (Fs14.8±7.0Wo 1.4±2.0 (Fs6.9-22.9Wo0.1-4.9), n=5); Equilibrated clasts: Olivine (Fa24.7±0.7, Fe/Mn=47.8±4.4, n=7); low Ca pyroxene (Type 4 Fs18.1±7.2Wo2.7±4.4, n=5; Type 6 Fs21.4±0.6Wo1.7±0.2, n=5) Xenolithic clast: Olivine (Fa2.8±2.2, Fe/Mn=16.2±16.4, n=3); low Ca-pyroxene (Fs2.7Wo2.0, n=1).

Classification: Ordinary chondrite (L3-6 xenolithic breccia, C-S3, W1). Based on the textures, mineral compositions, magnetic susceptibility and chondrule diameters, this is an L3-6 chondrite breccia. The xenolith has textures and compositions similar to CM2 carbonaceous chondrites.

Specimens: The main masses are held by Fabien Kuntz. An endcut and slice weighing 28.75 g and a polished thin section are on deposit at App.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Guelmin
Date:2019
Mass (g):1247
Pieces:28
Class:L3-6
Shock stage:C-S3
Weathering grade:W1
Fayalite (mol%):22.7±3.4; 24.7±0.7; 2.8±2.2
Ferrosilite (mol%):14.8±7.0; 18.1±7.2; 21.4±0.6; 2.7
Wollastonite (mol%):1.4±2.0; 2.7±4.4; 1.7±0.2; 2.0
Magnetic suscept.:4.69
Classifier:A. Love, App
Type spec mass (g):28.75
Type spec location:App
Main mass:Fabien Kuntz
Finder:Unknown
Comments:Submitted by Anthony Love
Institutions
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1522 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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