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Northwest Africa 13680
Basic information Name: Northwest Africa 13680
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13680
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 848 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 594 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 16 Jan 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13680 (NWA 13680)

(Northwest Africa)

Purchased: 2020

Classification: Ureilite

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

Physical characteristics: Dark brownish oriented stone without fusion crust broken into three parts.

Petrography: The meteorite shows a cumulate texture composed of up to 1 mm sized abundant olivine and more minor pigeonite grains. Olivine displays characteristic reduced rims in contact with FeNi-metal or graphite.

Geochemistry: reduced rims in olivine: Fa2.5-6.3, N=4; olivine contains 0.99±0.03 wt% Cr2O3 and 0.36±0.01 wt% CaO; pigeonite contains 1.46±0.02 wt% Cr2O3 and 0.46±0.01 wt% Al2O3

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2020
Mass (g):848
Pieces:1
Class:Ureilite
Shock stage:low
Weathering grade:low
Fayalite (mol%):16.5±0.1, n=4
Ferrosilite (mol%):14.3±0.1, n=5
Wollastonite (mol%):6.7±0.1, n=5
Classifier:A. Greshake, MNB
Type spec mass (g):37.2
Type spec location:MNB
Main mass:Tomasz Jakubowski
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. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8025 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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