Achondrite (monomict eucrite)
Several stones totaling 950g were found in 2005 by an anonymous finder in
the Saharan desert.
Classification and mineralogy (A. Greshake)
Unusual eucrite with dominantly coarse-grained basaltic texture of exsolved
Ca-pyroxene and plagioclase crosscut by cm-sized granular bands or crushed
zones; locally these zones display an equigranular texture with 120° grain
boundaries; minor phases include orthopyroxene, silica, ilmenite, troilite,
and Al-Ti-chromite; plagioclase, An90.1 (range An88.3-92.6); orthopyroxene,
Fs58.1-62.2Wo2.7-4.6; pigeonite, Fs50.7-58.6Wo5.2-15.7; augite,
Fs26.3-34.9Wo32.1-44.1; high degree of shock; moderate degree of weathering.
Main mass with anonymous finder; type specimen 20.1 g plus one polished thin
Name : NWA 4039 Class : Achondrite, Monomict Eucrite Region: Morocco Date : 2005 TKW : 950g
Very nice and fresh meteorite. All slices polished. Weathering grade close to W0