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Northwest Africa 4886
Basic information Name: Northwest Africa 4886
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4886
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 54.4 g
Classification
  history:
Recommended:  Eucrite-br    [explanation]

This is 1 of 160 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 27 Mar 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 4886 (NWA 4886)

(Northwest Africa)

Purchased: 2006

Classification: HED achondrite (Eucrite, brecciated)

History: The meteorite was purchased in 2006 from a local meteorite dealer in Rissani, Morocco.

Physical characteristics: Greyish fragment partly covered with fusion crust.

Petrography: Breccia composed of basaltic clasts with mineral grains of 50-400 µm and up to 1 mm sized black melt clasts set into a clastic mineral matrix. Dominant minerals are exsolved pyroxenes and often laths-shaped calcic plagioclase. Minor phases are silica, chromite, FeS, ilmenite, and zircon. No metallic Fe has been found.

Geochemistry: low-Ca pyroxene: Fs50.7±7.8Wo6.3±1.6 (Fs30.7-57.3Wo3.0-9.9, n=15, FeO/MnO=26-32); Ca-pyroxene: Fs38.3±9.2Wo31.3±7.8 (Fs26.6-52.5Wo20.7-42.8, n=4, FeO/MnO=28-31); calcic plagioclase: An85.5±1.8 (An83.1-88.1, n=11)

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Rissani, Morocco
Date:P 2006
Mass (g):54.4
Pieces:1
Class:Eucrite-br
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):50.7; 38.3
Wollastonite (mol%):6.3; 31.3
Classifier:A. Greshake, MNB
Type spec mass (g):11
Type spec location:MNB
Main mass:Stefan Ralew
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6709 approved meteorites from (Northwest Africa) (plus 2022 unapproved names)

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