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Northwest Africa 15136
Basic information Name: Northwest Africa 15136
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15136
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 19.73 kg
Classification
  history:
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 120 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 5 Sep 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15136 (NWA 15136)

(Northwest Africa)

Purchased: 2022 Mar

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased by Wenxi Jin and Ziyao Wang in January 2022 from a dealer in Bir Lahlo, Algeria, and sold to Fujun Ren in March 2022.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) The specimen has an ophitic texture with relatively thin laths of calcic plagioclase associated with pyroxene (both low-Ca and high-Ca, exhibiting only limited exsolution and some composiitonal zoning). Accessory phases are silica polymorph, Ti-chromite, ilmenite and troilite. Several shock melt veins are present in the studied mount.

Geochemistry: Low-Ca pyroxene (Fs61.3-62.0Wo2.2-3.1, FeO/MnO = 31-34, N = 4), augite (Fs26.2-27.6Wo43.7-44.1, FeO/MnO = 31-34, N = 4), plagioclase (An86.0-86.8Or0.7-0.5, N = 3).

Classification: Eucrite (unbrecciated, ophitic).

Specimens: 32.9 g including a polished mount and one polished thin section at UWB; remainder with Mr. Fujun Ren.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:China
Date:P 2022 Mar
Mass (g):19730
Pieces:1
Class:Eucrite-unbr
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):61.3-62.0; 26.2-27.6
Wollastonite (mol%):2.2-3.1; 43.7-44.1
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):32.9
Type spec location:UWB
Main mass:Fujun Ren
Comments:Work name WZY-106; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8636 approved meteorites from (Northwest Africa) (plus 1884 unapproved names)

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