[meteorite-list] Ad- NWA 2890 Howardite

[S. Ralew]

Dear List Members,

today I want to introduce a new howardite, NWA 2890. It is for me a very
nice example of this interesting meteorite type. All slices comes with nice
polishing on one side and the prices for the specimens are reasonable.

Northwest Africa 2890
Found 2004
Achondrite (howardite)

A single stone of 132 g was found 2004 by an anonymous finder in the North
African Saharan desert. Classification and mineralogy (A. Greshake):
polymict breccia with eucritic and diogenitic fragments embedded in a
clastic matrix; contains dark impact melt fragments; eucrite clasts consist
mainly of frequently exsolved Ca-pyroxene and plagioclase; plagioclase,
An96.4-97.3; pigeonite, Fs37.3-53.0Wo9.3-13.4; augite,
Fs23.0-31.1Wo39.6-43.3; minor phases include olivine, Mg-Al-chromite and
ilmenite; diogenitic lithologies are dominated by sometimes zoned
orthopyroxene, Fs18.8-32.0; low degree of shock; low degree of weathering.
main mass, Stefan Ralew, Germany; type specimen 22.1 g plus one polished
thin sections MNB.

http://www.meteoriten.com/special.html

I work on all orders and reservations as soon as possible and exactly in the
order of arriving.

Best wishes,
Stefan

SR-Meteorite
I.M.C.A. Member#3368
Email: stefan at meteoriten.com
Website url: http://www.meteoriten.com/
Stefan Ralew
Kunibertstrasse 29
12524 Berlin
Germany