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Northwest Africa 15886
Basic information Name: Northwest Africa 15886
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15886
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 143 g
Classification
  history:
Meteoritical Bulletin:  MB 112  (2023)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 605 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 7 May 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 15886 (NWA 15886)

(Northwest Africa)

Find: 2022

Classification: HED achondrite (Eucrite)

History: Bought in 2022 from A. Mouadine in Brügg

Physical characteristics: Single individual of 143 g with 95% fresh crust without flight marks. Cut face reveals light-gray to light brownish, brecciated, interior with lithic clasts up to 5 mm.

Petrography: fine-grained (<100 μm) recrystallized debris of plagioclase and (mainly eucritic) pyroxene with rare sulfide and chromite. Some impact glass areas. Unusual texture in optical microscope. <10 vol% of diogenitic material.

Geochemistry: low-Ca pyroxene Fs50.3±1.2Wo11.4±2.1, FeO/MnO=33.6±3.7 (n=14). Plagioclase An87.5±2.6Ab12.3±2.5 (n=16)

Classification: Achondrite (eucrite-polymict)

Data from:
  MB112
  Table 0
  Line 0:
Date:2022
Mass (g):143
Pieces:1
Class:Eucrite
Shock stage:high
Weathering grade:W1
Ferrosilite (mol%):50.3±1.2 (n=14)
Wollastonite (mol%):11.4±2.1 (n=14)
Classifier:M. Patzek, K.Klemm, IfP
Type spec mass (g):37.5
Type spec location:IfP
Main mass:M.Jost
Comments:Submitted by K. Klemm (IfP)
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9746 approved meteorites from (Northwest Africa) (plus 1866 unapproved names)

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