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Northeast Africa 019
Basic information Name: Northeast Africa 019
     This is an OFFICIAL meteorite name.
Abbreviation: NEA 019
Observed fall: No
Year found: 2019
Country: Libya
Mass:help 21.9 g
Classification
  history:
Recommended:  CK4/5    [explanation]

This is 1 of 15 approved meteorites classified as CK4/5.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 8 Apr 2021
Writeuphelp
Writeup from MB 110:

Northeast Africa 019 (NEA 019)

Libya

Purchased: 2019 Nov

Classification: Carbonaceous chondrite (CK4/5)

History: Purchased by Mbark Arjdal in November 2019 from a Libyan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Some well-formed magnetite-bearing chondrules occur within a relatively coarse grained matrix containing Cr-magnetite, pentlandite and secondary barite. A tiny ~150 nm nugget of sperrylite was confirmed in one pentlandite grain.

Geochemistry: Olivine (Fa33.8±0.2, range Fa33.6-34.0, N = 6), low-Ca pyroxene (Fs28.6±1.4Wo0.7±0.2, range Fs27.4-29.8Wo0.6-1.1, N = 4), subcalcic augite (Fs17.7Wo34.4), augite (Fs9.6±0.6Wo46.9±0.1, N = 2), plagioclase (An58.2Or1.6; An93.3Or0.1; N = 2), magnetite (Cr2O3 = 4.6 wt.%. 4.8 wt.%, N = 2).

Classification: Carbonaceous chondrite (CK4/5).

Specimens: 5.8 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Libya
Date:P 2019 Nov
Mass (g):21.9
Pieces:1
Class:CK4/5
Shock stage:S2
Weathering grade:low
Fayalite (mol%):33.8±0.2
Ferrosilite (mol%):28.6±1.4
Wollastonite (mol%):0.7±0.2
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):5.8
Type spec location:UWB
Main mass:M. Arjdal
Finder:anonymous
Comments:Work name Arj ZM 700; 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)
Catalogs:
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography:

Libya
Coordinates:Unknown.

Statistics:
     This is 1 of 1537 approved meteorites from Libya (plus 23 unapproved names) (plus 2 impact craters)

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