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Northwest Africa 11116
Basic information Name: Northwest Africa 11116
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11116
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 1039 g
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 259 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 26 Feb 2017
Writeup from MB 106:

Northwest Africa 11116 (NWA 11116)

(Northwest Africa)

Purchased: 2016

Classification: HED achondrite (Eucrite, monomict)

History: Two stones weighing 875.4 and 163.7 g were found and subsequently purchased in Morocco in 2015. J. Donald Cline and John Sinclair acquired the samples from a meteorite prospector at the Tucson Gem and Mineral Show in February of 2016.

Physical characteristics: Sample is irregularly shaped, with a pitted surface (similar to a regmaglypted surface). Sample lacks fusion crust. The sample is mottled brownish-white in color. The exterior surface displays a distinctive basaltic texture of light-colored, lath-shaped minerals with dark colored, interstitial mafic silicates and oxides. Some pits contain terrestrial material.

Petrography: Description and classification (A. Love, App): Sample has a subophitic texture of 600-800 μm exsolved Ca-rich and Ca-poor pyroxenes surrounded by ~1000 μm plagioclase laths. The sample is transected by shock veins and fault-bounded zones that show brecciated and recrystallization textures. Accessory minerals are: Si-Polymorph, Zircon, troilite, chromite, ilmenite.

Geochemistry: (A. Love, App): Low-Ca Pyroxene: Fs64.4±0.8 Wo2.3±0.7, Fe/Mn=42, n=12; Ca-Pyroxene: Fs28.7±1.1Wo43.1±1.4, Fe/Mn=41, n=9,); Calcic plagioclase: An89.2±0.5Or0.4±0.1, n=5).

Classification: HED (Eucrite, monomict)

Specimens: PARI holds the main masses (875.4 g and 136.9g ). A slice and an end cut weighing 20.82 g and one polished thin section are on deposit at App.

Data from:
  Table 0
  Line 0:
Place of purchase:Tuscon Gem and Mineral Show
Date:P 2016
Mass (g):1039.1
Ferrosilite (mol%):63.3-66.0; 27.7-31.1
Wollastonite (mol%):1.5-4.1; 40.8-44.3
Classifier:A. Love, App
Type spec mass (g):21.5
Type spec location:App
Main mass:PARI
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)
PARI: Pisgah Astronomical Research Institute 1 Pari Dr Rosman, NC 28772, United States (institutional address; updated 13 Sep 2016)
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 8402 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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