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Northwest Africa 15652
Basic information Name: Northwest Africa 15652
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15652
Observed fall: No
Year found: 2022
Country: Niger
Mass:help 3.48 kg
Meteoritical Bulletin:  MB 112  (2023)  L5
Recommended:  L5    [explanation]

This is 1 of 8937 approved meteorites (plus 5 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 29 Jan 2023
Writeup from MB 112:

Northwest Africa 15652 (NWA 15652)


Purchased: March 2022

Classification: Ordinary chondrite (L5)

History: Purchased on March, 2022 by Thomas C. Garner through a seller in Niamey, Niger.

Physical characteristics: A single gark brown stone partially covered in light gray caliche, saw cut reveals a brecciated interior with bright metal flecks and a few chondrules set against a shock darkened groundmass.

Petrography: (D. Dickens, CCMS) Microprobe and optical examination of polished probe mount shows a breccia of mm sized angular clasts with sparse poorly delineated chondrules set in a recrystallized matrix. Kamacite and troilite were observed in mm sized blebs.

Geochemistry: (D. Dickens, CCMS and A. S. Bell, CUB) Olivine Fa24.2±0.3, n=6; low-Ca pyroxene Fs20.9±0.4Wo1.1±0.1, n=2.

Classification: Ordinary chondrite (L5)

Specimens: 33 g on deposit with Cascadia; Main mass with Logan Garner.

Data from:
  Table 0
  Line 0:
Date:P March 2022
Mass (g):3480
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):24.2±0.3
Ferrosilite (mol%):20.9±0.4
Wollastonite (mol%):1.1±0.1
Classifier:D. Dickens, CCMS
Type spec mass (g):33
Type spec location:Cascadia
Main mass:Logan Garner
Comments:Field name TG02; submitted by D. Dickens
   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)
CUB: Daniel Ozdín, Mineralogical Museum of Comenius University, Faculty of Natural Sciences, Ilkovicova 6, 842 15 Bratislava, Slovakia (institutional address; updated 2 Dec 2018)
CCMS: Colorado Center for Meteoritic Studies 6200 Becker LN Loveland, CO 80538, United States (private address; updated 22 Jan 2024)
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
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     This is 1 of 121 approved meteorites from Niger (plus 4 unapproved names)

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