header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 18 Jun 2021
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 13872
Basic information Name: Northwest Africa 13872
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13872
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 389 g
Classification
  history:
Recommended:  Mesosiderite    [explanation]

This is 1 of 211 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Approved 10 Apr 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13872 (NWA 13872)

(Northwest Africa)

Purchased: 2021

Classification: Mesosiderite

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

Physical characteristics: Eleven dark brownish fragments without fusion crust.

Petrography: The meteorite shows a light brownish interior and is composed of about equal parts of metal and silicates. Silicate-dominated regions predominantly consist of compositionally zoned low-Ca-pyroxene and calcic plagioclase. Pyroxene often contain small plagioclase grains and vice versa. Ca-pyroxene is present as blebby and lamellar exsolutions in low-Ca pyroxene. Minor phases are silica, Ti-chromite, FeS, and Mg-merrillite. Metal is present as small irregular shaped aggregates and as up to 2 cm large nodules. Kamacite dominates over taenite; contains minor schreibersite.

Geochemistry: zoned low-Ca pyroxene: Fs29.1±2.2Wo3.6±0.7 (Fs25.2-32.0Wo2.2-4.8, FeO/MnO=15-23, n=11); augite exsolutions: Fs14.9±1.1Wo41.5±1.9 (Fs13.5-16.4Wo38.1-43.0, FeO/MnO=14-17, n=11); calcic plagioclase: An92.3±1.3 (An91.1-95.1, n=10)

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):389
Pieces:11
Class:Mesosiderite
Shock stage:S1
Weathering grade:low
Ferrosilite (mol%):29.1; 14.9
Wollastonite (mol%):3.6; 41.5
Classifier:A. Greshake, MNB
Type spec mass (g):25.2
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin and Yang Shun-Chung
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. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7741 approved meteorites from (Northwest Africa) (plus 1971 unapproved names)

Direct link to this page