header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 23 May 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 15920
Basic information Name: Northwest Africa 15920
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15920
Observed fall: No
Year found: 2023
Country: (Northwest Africa)
Mass:help 437 g
Classification
  history:
Meteoritical Bulletin:  MB 112  (2023)  LL3
Recommended:  LL3    [explanation]

This is 1 of 491 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 7 May 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 15920 (NWA 15920)

(Northwest Africa)

Purchased: 2023 Jan 15

Classification: Ordinary chondrite (LL3)

Petrography: (K. Metzler, IfP) Ordinary chondrite of low petrologic type, consisting of closely packed chondrules (apparent size up to ~2 mm), chondrule fragments, and troilite, with small amounts of Fe-Ni metal grains and fine-grained interchondrule matrix. The mean apparent chondrule size is 578 µm (n=142).

Geochemistry: Mineral compositions and geochemistry: The mean olivine composition is Fa8.5±6.4 (Fa0.9-18.1; n=11); the mean low-Ca pyroxene composition is Fs10.9±9.6Wo1.1±1.2 (Fs1.7-30.8Wo0.2-4.3; n=14).

Classification: LL chondrite, based on low metal content and mean apparent chondrule size. Petrologic subtype <3.5, based on the chemical variation of olivine (PMD of Fa values 75%).

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Nouakchott, Mauritania
Date:P 2023 Jan 15
Mass (g):437
Pieces:1
Class:LL3
Shock stage:C-S4
Weathering grade:W2
Fayalite (mol%):8.5±6.4
Ferrosilite (mol%):10.9±9.6
Wollastonite (mol%):1.1±1.2
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Anonymous
Comments:Submitted by K. Metzler, IfP
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Public domain photographs:
Knut Metzler      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9746 approved meteorites from (Northwest Africa) (plus 1855 unapproved names)

Direct link to this page