Meteoritical Bulletin: Entry for Northwest Africa 14175

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Northwest Africa 14175

Basic information

Name: Northwest Africa 14175
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14175
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 4.27 kg

Classification
history:

Recommended:

L3 [explanation]

This is 1 of 783 approved meteorites (plus 1 unapproved name) classified as L3. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 20 Dec 2021

Writeup

Writeup from MB 110:

Northwest Africa 14175 (NWA 14175)

(Northwest Africa)

Purchased: 2021 Jan

Classification: Ordinary chondrite (L3)

History: Purchased by Dr. David Gregory in January and September 2021 from a dealer in Zagora, Morocco.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Very closely packed, well-formed glass-bearing chondrules (apparent diameter 860 ± 570 µm, N = 25) are set in a very sparse matrix containing stained kamacite, taenite, troilite and chromite.

Geochemistry: Olivine (Fa_22.4±11.1, range Fa_4.0-32.4, N = 7; Cr₂O₃ in ferroan olivine 0.01-0.11 wt.%, mean 0.04±0.02 wt.%, N = 30), low-Ca pyroxene (Fs_17.8±9.4Wo_2.8±2.4, range Fs_3.2-29.2Wo_0.3-5.4, N = 5), augite (Fs_11.7Wo_35.8; Fs_6.0Wo_42.6; N = 2). Magnetic susceptibiliy log χ (× 10^-9 m³/kg) = 4.74.

Classification: Ordinary chondrite (L3).

Specimens: 20.8 g including one polished thin section at UWB; remainder with DGregory.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Zagora
Date:	P 2021 Jan
Mass (g):	4273
Pieces:	2
Class:	L3
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	22.4±11.1
Ferrosilite (mol%):	17.8±9.4
Wollastonite (mol%):	2.8±2.4
Magnetic suscept.:	4.74
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	20.8
Type spec location:	UWB
Main mass:	DGregory
Comments:	Work name RC144.3; submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
DGregory: David Gregory, 230 First Avenue, Suite 108, St. Thomas, Ontario N5R 4P5, Canada (private address)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 110, in preparation (2021)

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8402 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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