For Sale IconNWA 8657, NWA 10703 Martian Shergottite Meteorites for Sale

Location: Sahara Desert, exact location unknown.

Purchased: September 2014.

Classification: Martian meteorite (Shergottite).

Description (NWA8657): History: Purchased by Eric Twelker from a Moroccan dealer at the Denver Show in September 2014.
Physical characteristics: Wind-ablated exterior with some small patches of dull black fusion crust. Cut interior surfaces are overall greenish-gray with clear, glassy maskelynite evident, and sporadically distributed dark glass pockets and veinlets. Petrography: (A. Irving and S. Kuehner, UWS) Diabasic texture. Composed predominantly of complexly zoned, prismatically-twinned clinopyroxene (up to 3.8 mm long) and maskelynite laths (up to 1.8 mm long) with accessory ilmenite, ulvöspinel, pyrrhotite, merrillite, chlorapatite and vesicular glass. Minor components are anorthoclase (containing blades of silica polymorph) and symplectitic intergrowths of ferrosilite+silica.
Geochemistry: Subcalcic augite (Fs20.8-21.8Wo36.4-34.1, FeO/MnO = 28-30, N = 2), ferroan subcalcic augite (Fs39.1Wo30.7, FeO/MnO = 39), pigeonite (Fs33.7-53.1Wo11.8-11.6, FeO/MnO = 38-39, N = 2), ferropigeonite rims (Fs65.1-67.1Wo18.7-14.4, FeO/MnO = 37-41, N = 3), ferrosilite (Fs75.4Wo2.0, FeO/MnO = 41), plagioclase (maskelynite) (An42.3-45.3Or2.8-2.7, N = 2), anorthoclase (An33.4Or15.0). Classification: Martian (shergottite, diabasic). Likely paired with NWA 8656 and NWA 10703.

Link to Meteoritical Bulletin Database.

Other references:

Link to Dr. Anthony Irving's Martain Meteorite Page

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#NWA8657-159 #NWA10703-177 #NWA10703-179 #NWA8657-205 About Scale:  Each photo has a small one centimeter cube.  That's a little less than a half inch on a side.  The coin above is a US dime.
Weight: 0.159 gm Weight: 0.177 gm Weight: 0.179 gm Weight: 0.205 gm
Features: Part slice Features: Part slice Features: Part slice Features: Part slice
Price: sold sold sold sold

#NWA8657-1-193 #NWA8657-1-352 #NWA8657-1-920 #NWA8657-2-016 #NWA8657-2-094
Weight: 1.193 gm Weight: 1.352 gm Weight: 1.920 gm Weight: 2.016 gm Weight: 2.094 gm
Features: Part slice Features: Part slice Features: Part slice Features: Part slice Features: Part slice
$363 $411 $581 sold sold

#NWA8657-14-410
Weight: 14.410 gm
Features: Part slice
$3900