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NWA 11020 Eucrite Meteorite Part Slice weighing 0.66g


In stock

NWA 11020 Eucrite Meteorite Part Slice weighing 0.66g

Comes in a foam padded Gem jar.

Northwest Africa 11020
Basic informationName: Northwest Africa 11020
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11020
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 286 g
Recommended:  Eucrite-mmict
Comments:Approved 17 Dec 2016

Writeup from MB 105:

Northwest Africa 11020 (NWA 11020)

(Northwest Africa)

Purchased: 2016 Jun

Classification: HED achondrite (Eucrite, monomict)

History: Purchased by Fabien Kuntz in June 2016 from a dealer in Tan Tan, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of basaltic eucrite clasts in a sparse, dark matrix containing minor barite. The mostly rounded clasts consist of exsolved pigeonite (pale orange-brown in thin section) and polycrystalline calcic plagioclase with accessory silica polymorph, fayalitic olivine, Ti-chromite, ilmenite (containing rare inclusions of baddeleyite) and minor Fe-Mg-bearing merrillite.

Geochemistry: Orthopyroxene host (Fs59.2Wo3.9, FeO/MnO = 31), clinopyroxene exsolution lamella (Fs27.4Wo42.9, FeO/MnO = 29), clinopyroxene host (Fs29.1Wo42.1, FeO/MnO = 30), orthopyroxene exsolution lamella (Fs62.9Wo2.3, FeO/MnO = 30), fayalitic olivine (Fa83.9-86.0, FeO/MnO = 26-32), plagioclase (An85.0-90.0Or1.0-0.3, N = 2). Magnetic susceptibility log ? (× 10-9 m3/kg) = 2.96.

Classification: Eucrite (monomict breccia, shocked).

Specimens: 24.54 g including one polished thin section at PSF; remainder with Kuntz.

Data from:
Table 0
Line 0:
Place of purchase:Tan Tan
Date:P 2016 Jun
Mass (g):285.9
Shock stage:high
Weathering grade:moderate
Ferrosilite (mol%25):59.2-62.9; 27.4-29.1
Wollastonite (mol%25):3.9-2.3; 42.9-42.1
Magnetic suscept.:2.96
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):24.54
Type spec location:PSF
Main mass:F. Kuntz
Comments:K305; submitted by A. Irving