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Northwest Africa 5555
Basic information Name: Northwest Africa 5555
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 5555
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass:help 274 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 623 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 26 Jul 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 5555 (NWA 5555)

(Northwest Africa)

Purchased: 2008

Classification: Ureilite

History: The meteorite was bought in 2008 from a Moroccan meteorite dealer on a meteorite fair in Ensisheim, France.

Petrography: The meteorite displays a recrystallized texture composed of up to 2 mm sized olivine (Fa9.0±0.1, n=16) and pigeonite (Fs8.2±0.1Wo9.0±0.1, n=16) grains. Olivine shows characteristic reduced rims. Additionally, it contains rare orthopyroxene with Fs8.0Wo5.0, N=4.

Geochemistry: reduced rims in olivine: Fa3.3-6.8; Cr2O3 in ol: ~0.6 wt%

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Ensisheim, France
Date:P 2008
Mass (g):274.4
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:low
Fayalite (mol%):9.0±0.1 (n=16)
Ferrosilite (mol%):8.2±0.1 (n=16)
Wollastonite (mol%):9.0±0.1 (n=16)
Classifier:A. Greshake, MNB
Type spec mass (g):21.1
Type spec location:MNB
Main mass:Marc Jost
Comments:Submitted by Ansgar Greshake
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Mirko Graul   
Space Jewels   
Geography: 
Coordinates:Unknown.

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

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