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Northwest Africa 15356
Basic information Name: Northwest Africa 15356
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15356
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 260 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 576 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 22 Oct 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15356 (NWA 15356)

(Northwest Africa)

Purchased: 2021

Classification: HED achondrite (Eucrite)

History: Purchased from Craig Zlimen in 2021 from an Algerian meteorite dealer.

Physical characteristics: Single stone with dark brown fusion crust.

Petrography: (D. Sheikh, Cascadia) Specimen displays a brecciated texture and is comprised primarily of mm-sized lithic fragments and isolated sub-angular elongate/equant plagioclase and clinopyroxene grains (Av. ~0.3 mm, up to ~0.5 mm) set within a finer-grained groundmass rich in pigeonite. Accessory phases include Cr-spinel, ilmenite, SiO2-rich glass, and troilite.

Geochemistry: Pigeonite (Fs49.9±4.0Wo12.6±3.3, range Fs45.7-64.1Wo6.1-24.5, Fe/Mn=29±2, n=30), High-Ca Pyroxene (Fs47.3±31.9Wo34.8±11.6, range Fs24.7-69.9Wo26.6-43.1, Fe/Mn=34±4, n=2), Calcic Plagioclase (An90.6±0.5, range An89.0-91.3, n=20).

Classification: HED Achondrite (Eucrite).

Specimens: 20.65 grams at Cascadia, main mass with Craig Zlimen.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021
Mass (g):260
Pieces:1
Class:Eucrite
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):49.9±4.0, 47.3±31.9
Wollastonite (mol%):12.6±3.3, 34.8±11.6
Classifier:D. Sheikh, Cascadia
Type spec mass (g):20.65
Type spec location:Cascadia
Main mass:Craig Zlimen
Comments:CML 1529; submitted by Daniel Sheikh
Institutions
   and collections		 Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
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 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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