header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 14 Oct 2020
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:
Include past classifications in search
Limit to approved meteorite names
Search text:  
Northwest Africa 10887
Basic information Name: Northwest Africa 10887
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10887
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 61.4 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 238 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 14 Nov 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10887 (NWA 10887)

(Northwest Africa)

Purchased: 2016

Classification: HED achondrite (Eucrite, monomict)

History: Purchased by Gary Fujihara from Morocco, April 2016.

Physical characteristics: Single stone, partial fusion-crusted exterior. A saw cut surfaces reveal a fine-grained mix of white and gray plagioclase and pyroxene with mild brecciation. Scattered, black shock melt domains, up to 1 cm, are present throughout.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows an approximately 50-50 mix of plagioclase and pyroxene. The pyroxene grains show exsolution lamellae. Shock melt domains consist of fine grained quench crystals, with rafted clasts from the main lithology.

Geochemistry: (C. Agee and M. Spilde, UNM) Low-Ca pyroxene Fs60.3±1.2Wo3.4±1.5, Fe/Mn=31±1, n=6; augite Fs28.1±2.2Wo41.8±2.4, Fe/Mn=32±2, n=5; plagioclase An88.9±0.6, n=5.

Classification: Eucrite (monomict), equilibrated, single lithology with compositional separation of low Ca-pyroxene and augite. Shock melt present.

Specimens: 12.28 g including a probe mount on deposit at UNM, Gary Fujihara holds the main mass.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Northwest Africa
Date:P 2016
Mass (g):61.38
Pieces:1
Class:Eucrite-mmict
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):60.3±1.2; 28.1±2.2
Wollastonite (mol%):3.4±1.5; 41.8±2.4
Classifier:C. Agee, UNM
Type spec mass (g):12.28
Type spec location:UNM
Main mass:Gary Fujihara
Comments:GF-8; submitted by C. Agee, UNM
Institutions
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

Direct link to this page