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Northwest Africa 15284
Basic information Name: Northwest Africa 15284
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15284
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 364 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  H4
Recommended:  H4    [explanation]

This is 1 of 6539 approved meteorites (plus 3 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 14 Sep 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15284 (NWA 15284)

(Northwest Africa)

Purchased: 2021

Classification: Ordinary chondrite (H4)

History: Found in 2021 by Yunes Chaoui, later purchased by Chris Monk on 8-1-2021.

Physical characteristics: One stone with dark-brown fusion crust.

Petrography: (D. Sheikh, Cascadia) Sample is an ordinary chondrite containing chondrules (Av. 500±50 _m) and accessory Fe-Ni metal and troilite.

Geochemistry: Olivine (Fa18.9±0.4, range Fa18.2-19.8, n=34), Low-Ca Pyroxene (Fs16.7±0.5Wo1.2±0.5, range Fs16.1-18.4Wo0.8-3.0, n=21).

Classification: Ordinary Chondrite (H4).

Specimens: 23.3 g at Cascadia, main mass with Chris Monk.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):364
Pieces:1
Class:H4
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):18.9±0.4
Ferrosilite (mol%):16.7±0.5
Wollastonite (mol%):1.2±0.5
Classifier:D. Sheikh, Cascadia
Type spec mass (g):23.3
Type spec location:Cascadia
Main mass:Chris Monk
Comments:CML 1577; 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 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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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9806 approved meteorites from (Northwest Africa) (plus 1855 unapproved names)

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