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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
Meteoritical Bulletin:  MB 111  (2023)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 240 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 12 Nov 2022
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:
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2021
Mass (g):1721.9
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
   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)
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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     This is 1 of 9825 approved meteorites from (Northwest Africa) (plus 1851 unapproved names)

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