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Northwest Africa 11317
Basic information Name: Northwest Africa 11317
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11317
Observed fall: No
Year found: 2016
Country: Morocco
Mass:help 179 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  LL6-melt breccia
Recommended:  LL6-melt breccia    [explanation]

This is 1 of 17 approved meteorites classified as LL6-melt breccia.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 4 Jul 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11317 (NWA 11317)

Morocco, (Northwest Africa)

Purchased: Mar 2016

Classification: Ordinary chondrite (LL6, melt breccia)

History: Purchased by Hichame Mimaghador at the Erfoud Market in March 2016.

Physical characteristics: Single stone weighing 179 g with a dark-brown crust. Several metal spots in a black matrix are visible in a sawn surface. No evident chondrules.

Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi). Abundant melt regions containing scattered grains of metal and rounded troilite blebs are visible in the polished thin section. Rare remnant chondrules and mineral fragments are visible in other regions. The chondritic portion appears weakly shocked (S1).

Geochemistry: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi) Olivine (Fa29.4±1.3, N=6), orthopyroxene (Fs23.7±0.7Wo1.9±0.3, N = 7).

Classification: Ordinary Chondrite (LL6-melt breccia); S1; W1

Specimens: A total of 36 g and one thin section is on deposit at MSN-FI. Mimaghador holds the main mass.

Data from:
  MB106
  Table 0
  Line 0:
State/Prov/County:Morocco
Place of purchase:Erfoud
Date:P Mar 2016
Mass (g):179
Pieces:1
Class:LL6-melt breccia
Shock stage:S1
Weathering grade:W1
Fayalite (mol%):29.4±1.3 (n=6)
Ferrosilite (mol%):23.7±0.7 (n=7)
Wollastonite (mol%):1.9±0.3;
Classifier:V. Moggi Cecchi, S. Caporali, G. Pratesi, MSN-FI
Type spec mass (g):36
Type spec location:MSN-FI
Main mass:Mimaghador
Comments:Submitted by Vanni Moggi Cecchi
Institutions
   and collections		 MSN-FI: Museo di Storia Naturale “La Specola”, Sez. Mineralogia – Sistema Museale dell'Università degli Studi di Firenze Via Giorgio La Pira, 4 – 50121 Firenze, Italy; Website (institutional address; updated 24 Oct 2022)
UniFi: Università degli Studi di Firenze, P.zza S. Marco, 4 - 50121 Firenze, Italy (institutional address; updated 14 Sep 2013)
Catalogs:
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.
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1932 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)

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