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Northwest Africa 14678
Basic information Name: Northwest Africa 14678
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14678
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 660 g
Classification
  history:
Recommended:  R3    [explanation]

This is 1 of 57 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 19 Mar 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14678 (NWA 14678)

(Northwest Africa)

Purchased: 2021

Classification: Rumuruti chondrite (R3)

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

Physical characteristics: Ten almost black rocks without fusion crust.

Petrography: The meteorite is a breccia composed of up to 2.5 cm mostly angular type 3 clasts set into type 3 matrix. Both litholgies are composed of well defined partly flattened chondrules (apparent mean diameter about 400 µm) and mineral fragments set in abundant matrix dominated by Fe-rich olivine. Some black melt fragments are present. Minor phases are Ca-pyroxene and sodic plagioclase. Opaques are troilite, pentlandite, and Ti-bearing chromite; no metal has been detected.

Geochemistry: olivine: Fa24.1±15.5 (Fa0.6-51.1, n=23); low-Ca pyroxene: Fs13.9±8.9Wo0.5±0.2 (Fs1.1-29.0Wo0.2-0.9, n=13); Ca-pyroxene: Fs11.0±1.9Wo44.1±3.0 (Fs9.2-16.6Wo34.5-45.9, n=12)

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2021
Mass (g):660
Pieces:10
Class:R3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):24.1
Ferrosilite (mol%):13.9; 11.0
Wollastonite (mol%):0.5; 44.1
Classifier:A. Greshake, MNB
Type spec mass (g):26.2
Type spec location:MNB
Main mass:Marcin Cimala
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 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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