header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 24 Apr 2024
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:
 
Northwest Africa 15458
Basic information Name: Northwest Africa 15458
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15458
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 1470 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  R3-4
Recommended:  R3-4    [explanation]

This is 1 of 12 approved meteorites classified as R3-4.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 25 Dec 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15458 (NWA 15458)

(Northwest Africa)

Purchased: 2022 Oct

Classification: Rumuruti chondrite (R3-4)

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

Physical characteristics: Brownish rock without fusion crust.

Petrography: Chondritic breccia composed of up to 5 cm sized type 4 and dark up to 3 mm sized melt clasts set in type 3 matrix. Type 3 and 4 lithologies are composed of well outlined mostly rounded chondrules (apparent mean diameter about 450 μm) and mineral fragments set in abundant matrix dominated by Fe-rich olivine. Minor phases include Ca-pyroxene and sodic plagioclase. Opaques are troilite, pentlandite, and chromite; no metal has been detected.

Geochemistry: type 3 lithology: olivine: Fa26.5±16.3 (Fa1.0-44.2, n=22); low-Ca pyroxene: Fs15.8±12.6Wo0.8±0.3 (Fs2.7-30.0Wo0.3-1.1, n=10); ; type 4 lithology: olivine: Fa37.6±0.4 (Fa37.1-38.5, FeO/MnO=78±4, n=10); low-Ca pyroxene: Fs20.4±7.1Wo0.7±0.9 (Fs13.9-29.2Wo0.1-3.1, n=10); Ca-pyroxene: Fs9.3±0.4Wo45.5±1.0 (Fs8.8-10.4Wo43.0-47.0, n=10)

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2022 Oct
Mass (g):1470
Pieces:1
Class:R3-4
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):26.5; 37.6
Ferrosilite (mol%):15.8; 20.4; 9.3
Wollastonite (mol%):0.8; 0.7; 45.5
Classifier:A. Greshake, MNB
Type spec mass (g):24.1
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. ?
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)
Woreczko Jan & Wadi      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)
Also see:
  This lists the most popular meteorites among people who looked up this meteorite.
Revision
  history:
  This lists important revisions made to data for this record.

Direct link to this page