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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:
Meteoritical Bulletin:  MB 111  (2023)  R3-6
Recommended:  R3-6    [explanation]

This is 1 of 35 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 Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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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 9933 approved meteorites from (Northwest Africa) (plus 1837 unapproved names)

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