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Northwest Africa 8059
Basic information Name: Northwest Africa 8059
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8059
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 54.5 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  LL3.05
Recommended:  LL3.05    [explanation]

This is 1 of 5 approved meteorites classified as LL3.05.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 18 Dec 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8059 (NWA 8059)

(Northwest Africa)

Purchased: 2013 Sep

Classification: Ordinary chondrite (LL3.05)

History: Purchased by Gary Fujihara in September 2013 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Closely packed, mostly medium-sized chondrules in a much finer grained matrix. Chondrules contain interstitial regions composed of glass plus very small, indeterminate quench-textured microlites.

Geochemistry: Olivine (Fa0.4-39.4, N= 24; Cr2O3 in ferroan olivine = 0.13-0.69 wt.%, mean 0.43±0.14 wt.%, N = 22), orthopyroxene (Fs1.1-42.8Wo1.1-0.9, N = 3), pigeonite (Fs13.2Wo19.2), subcalcic augite (Fs10.4Wo27.9). Oxygen isotopes (K. Ziegler, UNM): analyses by laser fluorination of acid-washed subsamples gave, respectively δ17O 2.688, 2.228, 2.349, 2.915; δ18O 5.277, 4.702, 3.273, 4.361; Δ17O -0.098, -0.255, 0.621, 0.612 per mil (for a TFL slope of 0.528). Magnetic susceptibility is log χ =3.80 (χ in 10-9 m3/kg)

Classification: Ordinary chondrite (LL3.05). Magnetic susceptibility indicates LL. Estimation of subtype based on Cr2O3 distribution in ferroan olivine per Fig. 15a of Grossman and Brearley (2005).

Specimens: 11.0 g including one polished thin section at UWB. The remainder is held by G. Fujihara.

Bibliography:
  • Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122. (link)
Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2013 Sep
Mass (g):54.5
Pieces:1
Class:LL3.05
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):0.4-39.4 (N=24)
Ferrosilite (mol%):1.1-42.8 (N=3)
Wollastonite (mol%):1.1-0.9
Magnetic suscept.:3.80
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):11.0
Type spec location:UWB
Main mass:G. Fujihara
Comments:GF13-9; submitted by A. Irving
Plots: O isotopes:  
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)
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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