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Northwest Africa 8305
Basic information Name: Northwest Africa 8305
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8305
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 895 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  L3
Recommended:  L3    [explanation]

This is 1 of 636 approved meteorites classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 18 Dec 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8305 (NWA 8305)

(Northwest Africa)

Purchased: 2013 Dec

Classification: Ordinary chondrite (L3)

History: Purchased by Marcin Cimala in December 2013 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Closely-packed, medium to large sized (0.6-3.3 mm), well-formed chondrules. Minerals are olivine, orthopyroxene, pigeonite), subcalcic augite, sodic plagioclase, troilite, chromite, chlorapatite and altered kamacite.

Geochemistry: Olivine (Fa3.1-57.9, N = 9; Cr2O3 content of ferroan olivine = 0.02-0.12 wt.%, mean 0.07±0.03 wt.%, N = 7), orthopyroxene (Fs2.7-7.7Wo0.8-0.9, N = 3), pigeonite (Fs23.4Wo12.3), subcalcic augite (Fs5.6Wo34.2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.94.

Classification: Ordinary chondrite L3. L group designation based on magnetic susceptibility.

Specimens: 20.3 g including one polished thin section at UWB. The remainder is held by M. Cimala.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2013 Dec
Mass (g):895
Pieces:1
Class:L3
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):3.1-57.9
Ferrosilite (mol%):2.7-7.7
Wollastonite (mol%):0.8-0.9
Magnetic suscept.:4.94
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.3
Type spec location:UWB
Main mass:M. Cimala
Comments:MC117; 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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Piotr gural100   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6325 approved meteorites from (Northwest Africa) (plus 2026 unapproved names)

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