Meteoritical Bulletin: Entry for Northwest Africa 14995

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Northwest Africa 14995

Basic information

Name: Northwest Africa 14995
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14995
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 160 g

Classification
history:

Recommended:

CO3 [explanation]

This is 1 of 642 approved meteorites (plus 1 unapproved name) classified as CO3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites

Comments:

Approved 20 Jun 2022

Writeup

help

Writeup from MB 111:

Northwest Africa 14995 (NWA 14995)

(Northwest Africa)

Purchased: 2021 Dec

Classification: Carbonaceous chondrite (CO3)

History: Purchased by Shun-Chung Yang and Juan Chen in 2021 from a dealer in Tindouf, Algeria.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed unequilibrated, glass-bearing chondrules (exhibiting a wide range in apparent diameter of 430±320 µm, N = 26), together with small, zoned olivine fragments and rare very small, very fine-grained CAI, are set in a fine grained matrix (~ 40 vol.%, deep reddish-brown in thin section) containing magnetite, troilite, pentlandite and kamacite.

Geochemistry: Olivine (Fa_14.7±8.6, range Fa_0.4-39.7, N = 17; Cr₂O₃ in ferroan olivine 0.01-0.48 wt.%, mean 0.15±0.11 wt.%, N = 13), low-Ca pyroxene (Fs_15.4±9.6Wo_1.9±1.4, range Fs_1.0-29.5Wo_1.0-5.0, N = 8), augite (Fs_6.2Wo_36.7; Fs_4.1Wo_41.4; N = 2).

Classification: Carbonaceous chondrite (CO3, magnetite-bearing).

Specimens: 21.8 g including one polished thin section at UWB; remainder with Mr. S.-C. Yang and Mr. J. Chen.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Tindouf
Date:	P 2021 Dec
Mass (g):	160
Pieces:	1
Class:	CO3
Shock stage:	S2
Weathering grade:	low
Fayalite (mol%):	14.7±8.6
Ferrosilite (mol%):	15.4±9.6
Wollastonite (mol%):	1.9±1.4
Classifier:	A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):	21.8
Type spec location:	UWB
Main mass:	S.-C. Yang and J. Chen
Comments:	Work name SCY-59; 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)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 26 Oct 2023)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 111, in preparation (2022)

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Elang Erlangga

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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