header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 15 Apr 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 15309
Basic information Name: Northwest Africa 15309
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15309
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 900 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  Eucrite-unbr
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 136 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 1 Oct 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15309 (NWA 15309)

(Northwest Africa)

Purchased: 2022 Jul

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased by Ziyao Wang in July 2022 from a dealer in Laayoune, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) The specimen has a coarse grained gabbroic texture (grainsize up to ~3.5 mm), but with some much finer grained regions. The sample is composed predominantly of exsolved pigeonite and calcic plagioclase together with accessory silica polymorph, Ti-chromite, ilmenite, troilite, zircon, and minor secondary barite. Both pyroxene and plagioclase occur as polygranular clusters, and pyroxene consists of irregular, blebby, non-lamellar grains of exsolved augite within host orthopyroxene.

Geochemistry: Orthopyroxene (Fs62.3-64.1Wo1.7-2.3, FeO/MnO = 30-32, N = 4), augite (Fs26.5-29.1Wo44.5-41.8, FeO/MnO = 30-33, N = 4), plagioclase (An86.4-90.8Or0.4-0.2, N = 3).

Classification: Eucrite (unbrecciated, gabbroic).

Specimens: 23.6 g including one polished thin section at UWB; remainder with WangZ.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Laayoune
Date:P 2022 Jul
Mass (g):900
Pieces:1
Class:Eucrite-unbr
Ferrosilite (mol%):62.3-64.1; 26.5-29.1
Wollastonite (mol%):1.7-2.3; 44.5-41.8
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):23.6
Type spec location:UWB
Main mass:WangZ
Comments:Work name SMB-02; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
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 Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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)
Fujun Ren         
Xiaofei Ji               
Ziyao Wang               
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
  This lists the most popular meteorites among people who looked up this meteorite.
Revision
  history:
  This lists important revisions made to data for this record.

Direct link to this page