header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 18 Nov 2023
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 16322
Basic information Name: Northwest Africa 16322
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 16322
Observed fall: No
Year found: 2023
Country: (Northwest Africa)
Mass:help 33 g
Classification
  history:
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 307 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 10 Nov 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 16322 (NWA 16322)

(Northwest Africa)

Purchased: 2023 Sept

Classification: Martian meteorite (Shergottite)

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

Physical characteristics: Grayish rock partly covered with fusion crust.

Petrography: The meteorite is composed of up to 2 mm sized elongated pyroxenes, up to 1.5 mm sized partly euhedral olivine crystals, and interstital up to to 800 µm lath-shaped maskelynite grains. Pyroxenes display patchy compositional zoning; olivines mostly show magmatic zoning with Mg-rich cores and Fe-rich rims and contain abundant magmatic inclusions. Minor phases include chromite, ilmenite, troilite, and FeNiS. Contains abundant glassy to finely recrystallized shock melt veins and pocket.

Geochemistry: olivine: Fa40.5±9.4 (Fa28.5-56.1, FeO/MnO=48±2, n=10); pyroxene: Fs29.7±8.1Wo10.0±6.7? (Fs24.5-45.7Wo4.4-26.8, FeO/MnO=28±2, n=10); maskelynite (An49.0-54.4Ab43.2-47.7Or2.3-3.1, n=10)

Classification: Martian (shergottite), olivine-bearing

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Temara, Morocco
Date:P 2023 Sept
Mass (g):33
Pieces:1
Class:Martian (shergottite)
Shock stage:high
Weathering grade:low
Fayalite (mol%):40.5
Ferrosilite (mol%):29.7
Wollastonite (mol%):10.0
Classifier:A. Greshake, MNB
Type spec mass (g):6.7
Type spec location:MNB
Main mass:Said Yousfi
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum f├╝r Naturkunde, Invalidenstra├če 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
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:
Ansgar Greshake   
Geography: 
Coordinates:Unknown.

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

Direct link to this page