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Northwest Africa 14856
Basic information Name: Northwest Africa 14856
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14856
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 27 g
Classification
  history:
Recommended:  R3    [explanation]

This is 1 of 63 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 9 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14856 (NWA 14856)

(Northwest Africa)

Purchased: January, 2022

Classification: Rumuruti chondrite (R3)

History: The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania, in January, 2022.

Physical characteristics: Almost black rock without fusion crust.

Petrography: Breccia composed of up to 5 mm sized type 3 and dark impact melt clast in type 3 lithology. Type 3 lithologies contain well defined mostly rounded chondrules (apparent mean diameter about 400 µm) and mineral fragments in abundant matrix dominated by Fe-rich olivine. More minor phases are Ca-pyroxene, low-Ca pyroxene, and sodic plagioclase. Opaques include troilite, pentlandite, and Ti-bearing chromite; no metal detected.

Geochemistry: olivine: Fa25.7±16.0 (Fa0.9-44.9, n=22); low-Ca pyroxene: Fs14.4±8.7Wo1.1±1.4 (Fs2.0-29.1Wo0.1-4.3, n=17); Ca-pyroxene: Fs10.0±0.3Wo45.3±0.6 (Fs9.6-10.7Wo43.9-46.1, n=10)

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Nouadhibou, Mauritania
Date:P January, 2022
Mass (g):27
Pieces:1
Class:R3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):25.7
Ferrosilite (mol%):14.4; 10.0
Wollastonite (mol%):1.1; 45.3
Classifier:A. Greshake, MNB
Type spec mass (g):5.5
Type spec location:MNB
Main mass:Salamu Ali
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. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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