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Northwest Africa 11594
Basic information Name: Northwest Africa 11594
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11594
Observed fall: No
Year found: 2016
Country: Algeria
Mass:help 106.8 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 412 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 11594 (NWA 11594)

Algeria

Purchased: 2016 May 1

Classification: HED achondrite (Eucrite)

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

Physical characteristics: On the unbroken surfaces, black fusion crust is partly preserved. The meteorite is a polymict breccia consisting of fragments of medium- to coarse-grained metamorphosed gabbroic rocks and fine-grained subophitic basaltic rocks. Dimensions: 5.5 × 6.0 × 7.2 cm.

Petrography (L. Huang, B. Miao, H. Chen, GUT): Breccia containing a variety of basaltic lithologies, with <10 vol % cumulate lithologies. Cumulate eucrite lithologies are coarse grained (~0.6-1 mm) gabbros composed principally of low-Ca zoned clinopyroxene and calcic plagioclase. Basaltic breccia lithologies are fine grained, have mostly subophitic textures, and 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=35.2. Low-Ca pyroxene of cumulate lithologies: median compositions are Mg#=51.7, Fs46.6Wo3.7 (n=20). Low-Ca pyroxene of basaltic lithologies: median compositions are Mg#=45.2, Fs52.6Wo4.1 (n=43). High-Ca pyroxene of basaltic lithologies: median compositions are Mg#=47.7, Fs38.5Wo27.7 (n=45). Plagioclase: An73.2-94.1Or0.23-2.17,median An88.2Or0.76 (n=10).

Classification: Basaltic polymict brecciated eucrite

Specimens: 34.6 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):106.77
Pieces:1
Class:Eucrite
Classifier:B. Miao, L.Huang,H. Chen, GUT
Type spec mass (g):34.6
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)
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
Zhipeng Xia   
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 944 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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