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Northwest Africa 11605
Basic information Name: Northwest Africa 11605
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11605
Observed fall: No
Year found: 2016
Country: Algeria
Mass:help 2.13 g
Classification
  history:
Recommended:  Howardite    [explanation]

This is 1 of 351 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 9 Feb 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11605 (NWA 11605)

Algeria

Purchased: 2016 May 1

Classification: HED achondrite (Howardite)

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

Physical characteristics: The medium-gray matrix contains a variety of clasts and fusion crust is not found in this small sample.

Petrography (L. Huang, B. Miao, H. Chen, GUT): Breccia containing a variety of eucrite lithologies with ~10-15 vol% of diogenite lithologies. Basaltic eucrite lithologies mostly have a fine-grained recrystallized or subophitic texture and contain very fine-grained vitrophyric textured basaltic lithologies. Diogenites lithologies are mostly a orthopyroxene. The matrices are mostly basaltic detritus. Accessories are silica, ilmenite, chromite, troilite.

Geochemistry (L.Huang, B. Miao, H. Chen, GUT): Bulk pyroxene: Fe/Mn=32.5; Orthopyroxene of diogenite lithologies: median compositions are Mg#=67.1, Fs31.9Wo3.2 (n=16). Low-Ca pyroxene of basaltic eucrite lithologies: median compositions are Mg#=37.4, Fs60.4Wo3.6 (n=14). High-Ca pyroxene of basaltic eucrite lithologies: median compositions are Mg#=54.1, Fs26.3Wo42.7 (n=8). Plagioclase: median An91.3Or0.4 (n=10).

Classification: Polymict brecciated howardite

Specimens: 0.6 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):2.13
Pieces:1
Class:Howardite
Classifier:B. Miao, L. Huang, H. Chen, GUT
Type spec mass (g):0.6
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)
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Photos:
CreditPhotos
Public domain photographs:
Zhipeng Xia   
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 770 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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