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Northwest Africa 11597
Basic information Name: Northwest Africa 11597
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11597
Observed fall: No
Year found: 2016
Country: Algeria
Mass:help 34.7 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 11597 (NWA 11597)

Algeria

Purchased: 2016 May 1

Classification: HED achondrite (Eucrite)

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

Physical characteristics: The interior of the meteorite is medium gray. Dimensions: 2.5 × 3.0 × 3.4 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 (~0.3-0.6 mm) gabbros composed principally of low-Ca clinopyroxene and calcic plagioclase. Basaltic breccia lithologies are fine grained, and have textures that are mostly subophitic. A silica phase is commonly present. Accessories are ilmenite, chromite and troilite.

Geochemistry (L. Huang, B. Miao, H. Chen, GUT): Bulk pyroxene: Fe/Mn=35.5. Low-Ca pyroxene of cumulate lithologies: median compositions are Mg#=45.1, Fs52.3Wo2.9 (n=10). Low-Ca pyroxene of basaltic lithologies: median compositions are Mg#=40.8, Fs57.2Wo3.7 (n=8). High-Ca pyroxene of basaltic lithologies: median compositions are Mg#=43.2, Fs46.6Wo18.6 (n=21). Plagioclase: An90.0-91.9Or0.5-0.7, median An91.9Or0.7 (n=6).

Classification: Basaltic polymict brecciated eucrite

Specimens: 11.1 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):34.74
Pieces:1
Class:Eucrite
Classifier:B. Miao, L.Huang, H. Chen, GUT
Type spec mass (g):11.1
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 944 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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