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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
Classification
  history:
Meteoritical Bulletin:  MB 112  (2024)  L5
Recommended:  L5    [explanation]

This is 1 of 9092 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
Writeuphelp
Writeup from MB 112:

Northwest Africa 15652 (NWA 15652)

Niger

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:
  MB112
  Table 0
  Line 0:
Date:P March 2022
Mass (g):3480
Pieces:1
Class:L5
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
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)
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)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?
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Geography:

Niger
Coordinates:Unknown.

Statistics:
     This is 1 of 123 approved meteorites from Niger (plus 6 unapproved names)

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