header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 5 Sep 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 13436
Basic information Name: Northwest Africa 13436
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13436
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 345 g
Classification
  history:
Meteoritical Bulletin:  MB 109  (2021)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 425 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 2 Nov 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13436 (NWA 13436)

(Northwest Africa)

Purchased: 2020 February

Classification: HED achondrite (Eucrite, polymict)

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

Physical characteristics: Dark grayish rock with patches of fusion crust covering about 20-30% of the surface.

Petrography: The meteorite is a polymict breccia composed of mineral, basaltic, and fine-grained recrystallized clasts set into a clastic matrix. Dominant minerals are exsolved pyroxene and calcic plagioclase with grain sizes of 10-30 μm in fine-grained clasts and 100-400 μm in coarse-grained regions. Minor phases include silica, chromite, FeS, ilmenite, and merrillite. No metallic Fe was detected. The meteorite contains several shock melt veins.

Geochemistry: low-Ca pyroxene: Fs56.4±0.3Wo2.2±0.1 (Fs55.8-57.2Wo2.0-2.4, n=14, FeO/MnO=28-31); Ca-pyroxene: Fs22.8±0.6Wo45.2±0.5 (Fs21.7-23.9Wo44.6-45.9, n=13, FeO/MnO=25-29); calcic plagioclase: An90.4±0.9 (An89.2-91.6, n=14)

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Marrakesh, Morocco
Date:P 2020 February
Mass (g):345.1
Pieces:1
Class:Eucrite-pmict
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):56.4; 22.8
Wollastonite (mol%):2.2; 45.2
Classifier:A. Greshake, MNB
Type spec mass (g):21.4
Type spec location:MNB
Main mass:Kuntz
Comments:Submitted by Ansgar Greshake
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J., Bouvier A., Bullock E., Chennaoui Aoudjehane H., Debaille V., D’Orazio M., Komatsu M., Miao B. and Schrader D. L. (2021) The Meteoritical Bulletin, No. 109. Meteoritics & Planetary Science 56, 1626–1630.
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

Direct link to this page