22.8g Eucrite mmict breccia cumulate | NWA 11183 | Collector's specimen
|Northwest Africa 11183|
Name: Northwest Africa 11183
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11183
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:> 127 g
This is 1 of 194 approved meteorites classified as Eucrite-mmict.
|Comments:||Approved 28 Mar 2017|
Writeup from MB 106:
Northwest Africa 11183 (NWA 11183)
Classification: HED achondrite (Eucrite, monomict)
History: Purchased by Dustin Dickens in 2016 from a Moroccan dealer.
Physical characteristics: Single stone, partial fusion crust. A saw cut reveals a fragmental breccia with clasts up to 3 mm, set in a blue-gray groundmass.
Petrography: (C. Agee, UNM) This meteorite consists of approximately 70% pyroxene and 20% plagioclase, there are fragmental pyroxene grains throughout. Accessory chromite, troilite, silica, clinopyroxene and Fe-metal were observed.
Geochemistry: (C. Agee and M. Spilde, UNM) Low Ca pyroxene Fs39.2±2.0Wo2.9±0.9, Fe/Mn=33±2, n=11; plagioclase An88.9±1.3, n=5.
Classification: Monomict cumulate eucrite
Specimens: 20.5 g including a probe mount on deposit at UNM, Dustin Dickens holds the main mass.
|UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; (institutional address; updated 12 Feb 2015)|
We Also Recommend