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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:
Recommended:  H4    [explanation]

This is 1 of 6388 approved meteorites (plus 2 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 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 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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