header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 7 May 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 15827
Basic information Name: Northwest Africa 15827
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15827
Observed fall: No
Year found: 2023
Country: (Northwest Africa)
Mass:help 71 g
Classification
  history:
Recommended:  Lodranite    [explanation]

This is 1 of 91 approved meteorites classified as Lodranite.   [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites
Comments: Approved 7 May 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 15827 (NWA 15827)

(Northwest Africa)

Purchased: 2023 Jan

Classification: Primitive achondrite (Lodranite)

History: Purchased by Ziyao Wang in January 2023 from a dealer in Laayoune, Morocco.

Petrography: (A. Irving, UWS, and J. Boesenberg, BrownU) Protogranular aggregate (mean grainsize ~500 µm) of predominantly olivine and orthopyroxene with accessory augite, kamacite (stained by secondary Fe oxides), troilite, chromite, merrillite and trace plagioclase. Minor Fe oxides/hydroxides are present as thin coatings along grain boundaries.

Geochemistry: Olivine (Fa15.5-17.0, FeO/MnO = 27-33, N = 12), orthopyroxene (Fs14.6-15.2Wo1.8-3.2, FeO/MnO = 18-21, N = 11), augite (Fs6.5Wo43.6, FeO/MnO = 14).

Classification: Lodranite.

Specimens: 14.35 g including one polished mount at UWB; remainder with WangZ.

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Laayoune
Date:P 2023 Jan
Mass (g):71
Pieces:2
Class:Lodranite
Shock stage:low
Weathering grade:low
Fayalite (mol%):15.5-17.0
Ferrosilite (mol%):14.6-15.2; 6.5
Wollastonite (mol%):1.8-3.2; 43.6
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):14.35
Type spec location:UWB
Main mass:WangZ
Comments:Work name SMB-12; submitted by A. Irving
Institutions
   and collections		 UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
WangZ: Ziyao Wang, Hebei GEO University North Campus, Huai An dong road 127, Shijiazhuang, Hebei Province , China (private address; updated 25 Jun 2021)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
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)
Ziyao Wang   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9092 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

Direct link to this page