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Northwest Africa 15369
Basic information Name: Northwest Africa 15369
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15369
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 541 g
Classification
  history:
Recommended:  Eucrite-br    [explanation]

This is 1 of 225 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 12 Nov 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15369 (NWA 15369)

(Northwest Africa)

Purchased: 2021

Classification: HED achondrite (Eucrite, brecciated)

History: Purchased in 2021 by Paul Stahura from Edwin Thompson, who had previously purchased it from a meteorite dealer in Mauritania.

Physical characteristics: Single stone with dark brown fusion crust.

Petrography: (D. Sheikh, Cascadia) Specimen is brecciated in appearance and is comprised of mm-sized, sub-angular basaltic and cumulate lithic clasts set within a finer-grained matrix having accessory SiO2-rich glass and ilmenite.

Geochemistry: Olivine (Fa84.0±1.2, range Fa82.4-85.3, Fe/Mn=38±1, n=4), Low-Ca Pyroxene (Fs44.8±12.9Wo4.4±1.0, range Fs30.7-61.3Wo2.7-5.5, Fe/Mn=29±3, n=11), Pigeonite (Fs51.8±5.1Wo12.7±5.4, range Fs42.5-60.0Wo6.6-22.2, Fe/Mn=30±2, n=19), High-Ca Pyroxene (Fs34.3±6.1Wo35.9±6.5, range Fs27.1-42.2Wo27.4-43.6, Fe/Mn=29±1, n=6), Calcic Plagioclase (An86.9±3.3, range An82.0-93.0, n=21).

Classification: Achondrite (Eucrite, brecciated).

Specimens: 84.95 g at Cascadia, main mass with Paul Stahura.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2021
Mass (g):541.2
Pieces:1
Class:Eucrite-br
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):84.0±1.2
Ferrosilite (mol%):44.8±12.9, 51.8±5.1, 34.3±6.1
Wollastonite (mol%):4.4±1.0, 12.7±5.4, 35.9±6.5
Classifier:D. Sheikh, Cascadia
Type spec mass (g):84.95
Type spec location:Cascadia
Main mass:Paul Stahura
Comments:CML 1602; 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 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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