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Northwest Africa 15323
Basic information Name: Northwest Africa 15323
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15323
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 3.6 kg
Classification
  history:
Recommended:  Eucrite-br    [explanation]

This is 1 of 220 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 1 Oct 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15323 (NWA 15323)

(Northwest Africa)

Purchased: 2021

Classification: HED achondrite (Eucrite, brecciated)

History: Purchased from Mauritania in 2021 by Edwin Thompson; subsequently acquired by Howard Stroupe.

Physical characteristics: Many stones without observable fusion crust.

Petrography: (D. Sheikh, Cascadia) Sample is a breccia predominantly comprised of mm-sized, sub-rounded to sub-angular cumulate and basaltic clasts and set within a fine-grained matrix containing accessory ilmenite and SiO2-rich glass.

Geochemistry: Low-Ca Pyroxene (Fs60.0±0.8Wo4.2±0.9, range Fs58.6-61.8Wo2.4-5.7, Fe/Mn=32±1, n=19), Pigeonite (Fs47.7±3.9Wo19.6±4.5, range Fs43.1-56.5Wo8.9-24.9, Fe/Mn=31±1, n=11), High-Ca Pyroxene (Fs35.5±7.1Wo33.5±7.9, range Fs27.8-43.3Wo25.1-41.9, Fe/Mn=32±2, n=7), Calcic Plagioclase (An86.3±3.5, range An79.1-90.7, n=24).

Classification: Achondrite (eucrite, brecciated).

Specimens: 57 g at Cascadia, main mass with Howard Stroupe.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2021
Mass (g):3600
Pieces:many
Class:Eucrite-br
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):60.0±0.8, 47.7±3.9, 35.5±7.1
Wollastonite (mol%):4.2±0.9, 19.6±4.5, 33.5±7.9
Classifier:D. Sheikh, Cascadia
Type spec mass (g):57
Type spec location:Cascadia
Main mass:Howard Stroupe
Comments:CML 1588; 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)
Thompson: Edwin Thompson, 5150 Dawn St., Lake Oswego, OR 97035, United States (private address)
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 9092 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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