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Northwest Africa 11595
Basic information Name: Northwest Africa 11595
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11595
Observed fall: No
Year found: 2016
Country: Algeria
Mass:help 71.3 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 11595 (NWA 11595)

Algeria

Purchased: 2016 May 1

Classification: HED achondrite (Eucrite)

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

Physical characteristics: The fusion crust has been largely weathered from the surface of the sample. The meteorite is a polymict breccia consisting of fragments of medium- to coarse-grained metamorphosed gabbroic rocks and medium- to fine-grained subophitic basaltic rocks. Dimensions: 4.5 × 6.0 × 6.4 cm.

Petrography (L. Huang, B. Miao, H. Chen, GUT): Breccia containing a variety of basaltic lithologies, with <10 vol % cumulate lithologies. Cumulate eucrites lithologies are coarse grained (~0.4-0.6 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=34.1. Low-Ca pyroxene cumulate lithologies: median compositions are Mg#=50.9, Fs48.0Wo2.2 (n=13). Low-Ca pyroxene of basaltic lithologies: median compositions are Mg#=42.6, Fs54.6Wo4.9 (n=12). High-Ca pyroxene of basaltic lithologies: median compositions are Mg#=44.4, Fs45.3Wo19.1 (n=28). Plagioclase: An87.2-95.1Or0.41-1.56, median An92.6Or0.78 (n=12).

Classification: Basaltic polymict brecciated eucrite

Specimens: 25.3 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):71.30
Pieces:1
Class:Eucrite
Classifier:B. Miao, L.Huang, H. Chen, GUT
Type spec mass (g):25.3
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 772 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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