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Northwest Africa 11593
Basic information Name: Northwest Africa 11593
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11593
Observed fall: No
Year found: 2016
Country: Algeria
Mass:help 44.4 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 405 approved meteorites classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 9 Feb 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11593 (NWA 11593)

Algeria

Purchased: 2016 May 1

Classification: HED achondrite (Eucrite)

History: Purchased by Miao Bing-an in 2016 in Morocco.

Physical characteristics: A single stone of 44.37 g, partly covered by fusion crust. Many cracks penetrate the interior of this meteorite. Dimensions: 4.5 × 4.0 × 5.0 cm.

Petrography (L. Huang, B. Miao, H. Chen, GUT): Breccia containing a variety of basaltic lithologies; also contains <10 vol% cumulate lithologies. Cumulate eucrite lithologies are coarse-grained (~0.5-1 mm) gabbros composed principally of low-Ca zoned clinopyroxene and calcic plagioclase. Basaltic breccia lithologies have fine to medium grain size, textures are subophitic to ophitic, and they contain very fine-grained vitrophyric textured basaltic lithologies. A silica phase is commonly present. Accessories are ilmenite, chromite, troilite and rare iron metal.

Geochemistry (L. Huang, B. Miao, H. Chen, GUT): Bulk pyroxene: Fe/Mn=34.9. Low-Ca pyroxene of cumulate lithologies: median compositions are Mg#=51.9, Fs46.3Wo3.8 (n=20). Low-Ca pyroxene of basaltic lithologies: median compositions are Mg#=41.5, Fs55.3Wo5.6 (n=36). High-Ca pyroxene of basaltic lithologies: median compositions are Mg#=43.4, Fs47.6Wo16.6 (n=45). Plagioclase: An83.9-92.9Or0.32-2.63, median An90.1Or0.9 (n=25).

Classification: Basaltic polymict brecciated eucrite

Specimens: 12.1 g and polished thin section are deposited in GUT

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2016 May 1
Mass (g):44.37
Pieces:1
Class:Eucrite
Classifier:B. Miao, L. Huang, H. Chen, GUT
Type spec mass (g):12.1
Type spec location:GUT
Main mass:GUT
Comments:Submitted by Bingkui Miao
Institutions
   and collections
GUT: College of Earth Sciences, Guilin University of Technology, 12 Jiangan Road, Guilin 541004, China (institutional address; updated 18 Oct 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
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Photos:
CreditPhotos
Public domain photographs:
Zhipeng Xia   
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 772 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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