Meteoritical Bulletin: Entry for Northwest Africa 14617

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Northwest Africa 14617

Basic information

Name: Northwest Africa 14617
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14617
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 636 g

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	L3
Recommended:			L3 [explanation]

This is 1 of 848 approved meteorites (plus 2 unapproved names) classified as L3. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 25 May 2022

Writeup

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Writeup from MB 111:

Northwest Africa 14617 (NWA 14617)

(Northwest Africa)

Purchased: May 2021

Classification: Ordinary chondrite (L3)

History: Purchased by an anonymous collector from a Moroccan dealer, in May 2021.

Physical characteristics: a single desert polished brown stone with excavated chondrules visible throughout the surface. Saw cut reveals many closely packed well defined chondrules with bright metal distributed throughout.

Petrography: (A. Ross, UNM) Microprobe examination of a polished mount shows numerous distinct PO, POP, and BO chondrules, most with glass or mesostasis. Ubiquitous metal observed, with significant metal in the interior and rimming of some PO chondrules. Chondrule average apparent diameter is 0.55±0.3 mm (N=10).

Geochemistry: (A. Ross, UNM) Olivine Fa_22.5±9.7, Mn/Fe=60±25, Cr₂O₃=0.06±0.05 wt%, n=12; low Ca pyroxene Fs_16.9±6.9Wo_1.5±1.3, n=6.

Classification: Ordinary chondrite (L3). Estimated subtype L3.5 based on olivine compositional scatter.

Specimens: 28 g including a probe mount on deposit at UNM, anonymous collector holds the main mass.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P May 2021
Mass (g):	636
Pieces:	1
Class:	L3
Shock stage:	low
Weathering grade:	W2
Fayalite (mol%):	22.5±9.7
Ferrosilite (mol%):	16.9±6.9
Wollastonite (mol%):	1.5±1.3
Classifier:	D. Dickens, NMMS; C. Agee, UNM
Type spec mass (g):	28
Type spec location:	UNM
Main mass:	Anonymous collector
Comments:	Fieldname DD-82; Submitted by Dustin Dickens; submitted by D. Dickens

Institutions
and collections

UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)

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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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