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Northwest Africa 12705
Basic information Name: Northwest Africa 12705
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12705
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 34.9 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 514 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 18 Aug 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12705 (NWA 12705)

(Northwest Africa)

Purchased: 2019

Classification: Ureilite

History: The meteorite was purchased from a local meteorite dealer in Zagora, Morocco.

Physical characteristics: Single light brownish stone without fusion crust.

Petrography: The meteorite displays a characteristic cumulate texture of up to 1.5 mm sized olivine and pigeonite crystals. Grains are often elongated and show a preferred orientation. Reduced rims in olivine are abundant. The meteorite contains flaky graphite.

Geochemistry: reduced rims in olivine: Fa2.0-10.6; olivine contains 0.50±0.03 wt% Cr2O3 and 0.30±0.02 wt% CaO

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Zagora, Morocco
Date:P 2019
Mass (g):34.9
Pieces:1
Class:Ureilite
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):21.2±0.2 (n=12)
Ferrosilite (mol%):17.8±0.1 (n=14)
Wollastonite (mol%):10.1±0.1 (n=14)
Classifier:A. Greshake, MNB
Type spec mass (g):7.6
Type spec location:MNB
Main mass:Fabien Kuntz
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2035 unapproved names)

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