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Northwest Africa 12505
Basic information Name: Northwest Africa 12505
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12505
Observed fall: No
Year found: 2017
Country: Mauritania
Mass:help 81 g
Classification
  history:
Recommended:  R3    [explanation]

This is 1 of 37 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 31 May 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 12505 (NWA 12505)

Mauritania

Purchased: 2017

Classification: Rumuruti chondrite (R3)

History: (Ziyao Wang) Purchased by Ziyao Wang from Aziz Habibi in Erfoud, Morocco 2017.

Physical characteristics: (Ziyao Wang) Dark brown stone of 81 g with visible chondrules its smooth, wind-eroded surface.

Petrography: (R. Bartoschewitz, Bart) Well-developed chondrules (0.1-1 mm, av. 0.3 mm) and rare CAIs set in a dark-gray matrix (~40 vol%).

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa37.5±10.6 (Fa8.2-49.2; n=47); pyroxene Fs14.2±10.6Wo0.1.8±4.0 (n=14); Ca pyroxene En40-61Fs17-27Wo12-44 (n=2); Cr-spinel CRAL=73-86, FFM=92-95, 1.8-4.2 wt% TiO2 (n=3). Pentlandite: Ni=29, Co=1 (n=3); pyrrhotite Ni?0.3, Co=0.1 (n=2); smythite Ni=28, Co=1.5 (n=1) (all wt-%). Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 3.52

Classification: R3

Specimens: 16.3 g on deposit at Kiel, Ziyao Wang holds the main mass, and 14 g with Bart.

Data from:
  MB109
  Table 0
  Line 0:
Origin or pseudonym:desert
Place of purchase:Erfoud, Morocco
Date:P 2017
Mass (g):81
Pieces:1
Class:R3
Fayalite (mol%):37.5±10.6 (8.2-49.2; n=47)
Ferrosilite (mol%):14.2±10.6 (n=14)
Wollastonite (mol%):1.8±4.0
Magnetic suscept.:3.52
Classifier:R. Bartoschewitz
Type spec mass (g):16.3
Type spec location:Kiel
Main mass:Ziyao Wang
Finder:anonymous
Comments:working name WZ86; submitted by R. Bartoschewitz
Institutions
   and collections
Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Wang Ziyao      
Geography:

Mauritania
Coordinates:Unknown.

Statistics:
     This is 1 of 114 approved meteorites from Mauritania (plus 1 unapproved name) (plus 2 impact craters)

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