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Northwest Africa 15370
Basic information Name: Northwest Africa 15370
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15370
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 1722 g
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 12 Nov 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15370 (NWA 15370)

(Northwest Africa)

Purchased: 2021

Classification: HED achondrite (Eucrite, brecciated)

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

Physical characteristics: Single stone with dark gray/brown fusion crust.

Petrography: (D. Sheikh, Cascadia) Brecciated eucrite composed of mm-sized, sub-rounded basaltic and cumulate lithic clasts set within a finer-grained matrix with accessory merrillite, Fe-Ni metal, SiO2-rich glass, and ilmenite.

Geochemistry: Low-Ca Pyroxene (Fs48.8±11.1Wo4.6±0.6, range Fs29.5-58.0Wo3.5-5.4, Fe/Mn=31±3, n=13), Pigeonite (Fs49.8±8.3Wo9.2±4.5, range Fs30.8-59.0Wo5.5-19.9, Fe/Mn=31±2, n=16), High-Ca Pyroxene (Fs27.2±2.6Wo39.3±2.9, range Fs22.7-30.6Wo33.9-44.6, Fe/Mn=30±3, n=15), Calcic Plagioclase (An88.7±3.2, range An80.2-92.4, n=23).

Classification: Achondrite (Eucrite, brecciated).

Specimens: 36.7 g at Cascadia, main mass with Steve Brittenham.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2021
Mass (g):1721.9
Pieces:1
Class:Eucrite-br
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):48.8±11.1, 49.8±8.3, 27.2±2.6
Wollastonite (mol%):4.6±0.6, 9.2±4.5, 39.2±2.9
Classifier:D. Sheikh, Cascadia
Type spec mass (g):36.7
Type spec location:Cascadia
Main mass:Steve Brittenham
Comments:CML 1604; 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 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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