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Northwest Africa 11416
Basic information Name: Northwest Africa 11416
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11416
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 62 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  EL6
Recommended:  EL6    [explanation]

This is 1 of 129 approved meteorites classified as EL6.   [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Comments: Approved 23 Sep 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11416 (NWA 11416)

Morocco, Laayoun, (Northwest Africa)

Purchased: May 2014

Classification: Enstatite chondrite (EL6)

History: Collected by nomads in Western Sahara and purchased by Nicola Castellano at the Genova Mineral Fair in May 2014 from a Moroccan dealer.

Physical characteristics: A single piece weighing 62 g partially covered by fusion crust.

Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi); The thin section texture consists of a fine-grained, pyroxene-dominant matrix, with minor plagioclase. Rare RP relic chondrules are visible. Kamacite and troilite are the main opaque phases and display minor weathering. Accessory phases are alabandite and daubreelite as blades in troilite. The presence of alabandite, An content of plagioclase and Si content of kamacite point to a classification as EL chondrite;

Geochemistry: EMP (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi) Orthopyroxene (Fs0.4En98.2Wo1.4), plagioclase (An15.8Or4.1); Si in kamacite = 0.4 wt.%, Ti in troilite = 5.7 wt.%

Classification: Enstatite chondrite (EL6); S2; W1

Specimens: A total of 13.0 g specimen is on deposit at MSN-FI. Castellano holds the main mass.

Data from:
  MB106
  Table 0
  Line 0:
State/Prov/County:Morocco, Laayoun
Place of purchase:Genova
Date:P May 2014
Mass (g):62
Pieces:1
Class:EL6
Shock stage:S2
Weathering grade:W1
Ferrosilite (mol%):0.4
Wollastonite (mol%):1.4
Classifier:V. Moggi Cecchi, S. Caporali, G. Pratesi, MSN-FI
Type spec mass (g):13.0
Type spec location:MSN-FI
Main mass:Castellano
Comments:Not paired with previous; 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: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7 approved meteorites from Morocco, Laayoun, (Northwest Africa)
     This is 1 of 9092 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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