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Northwest Africa 14862
Basic information Name: Northwest Africa 14862
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14862
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 430 g
Classification
  history:
Recommended:  R3-6    [explanation]

This is 1 of 34 approved meteorites classified as R3-6.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 9 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14862 (NWA 14862)

(Northwest Africa)

Purchased: March, 2022

Classification: Rumuruti chondrite (R3-6)

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

Physical characteristics: Brownish rock without fusion crust.

Petrography: The meteorite displays a light brownish to orange interior and is composed of up to 2 cm sized mostly angular type 6 and black impact melt clasts in type 3 matrix. Fe-rich olivine, Ca-pyroxene, and sodic plagioclase are the most dominant mineral phase in the type 6 clasts. In the matrix, olivine and low-Ca pyroxene are compositionally unequilibrated and chondrules have an average diameter of about 400 μm. Sodic plagioclase occurs as small isolated grains. Opaques phases are sulfides and Ti-bearing chromite; no metal detected.

Geochemistry: type 3 lithology: olivine: Fa25.4±13.7 (Fa3.0-41.3, n=19); low-Ca pyroxene: Fs16.7±10.3Wo0.9±0.7 (Fs1.4-34.7Wo0.2-3.1, n=15); type 6 lithology: olivine: Fa37.5±0.2 (FeO/MnO=80±5, n=10); Ca-pyroxene: Fs14.6±0.9Wo39.8±1.4, n=10; feldspar: An9.0-14.7Ab81.4-85.8Or3.9-5.8

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P March, 2022
Mass (g):430
Pieces:1
Class:R3-6
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):25.4; 37.5
Ferrosilite (mol%):16.7; 14.6
Wollastonite (mol%):0.9; 39.8
Classifier:A. Greshake, MNB
Type spec mass (g):20.7
Type spec location:MNB
Main mass:Polandmet - 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)
Polandmet: targoniny 30 43445 Dziegielow Poland, Poland; Website (institutional address; updated 7 May 2021)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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)
Szymon Kozlowski (simkoz)   
Woreczko Jan & Wadi      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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