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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:help 160 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 616 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
Writeuphelp
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 (Fa14.7±8.6, range Fa0.4-39.7, N = 17; Cr2O3 in ferroan olivine 0.01-0.48 wt.%, mean 0.15±0.11 wt.%, N = 13), low-Ca pyroxene (Fs15.4±9.6Wo1.9±1.4, range Fs1.0-29.5Wo1.0-5.0, N = 8), augite (Fs6.2Wo36.7; Fs4.1Wo41.4; 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
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Photos:
CreditPhotos
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 8744 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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