For Sale IconNWA 8657 Martian Shergottite Meteorites for Sale

Location: Sahara Desert, exact location unknown.

Purchased: September 2014.

Classification: Martian meteorite (Shergottite).

Description: 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.

Link to Meteoritical Bulletin Database.

Other references:

Link to Dr. Anthony Irving's Martain Meteorite Page

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#NWA8657-074 #NWA8657-091 #NWA8657-158 #NWA8657-174 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: 0.074 gm Weight: 0.091 gm Weight: 0.158 gm Weight: 0.174 gm
Features: Part slice Features: Part slice Features: Part slice Features: Part slice
Price: $29 $35 $56 $62

#NWA8657-180 #NWA8657-187 #NWA8657-225 #NWA8657-227 #NWA8657-281
Weight: 0.180 gm Weight: 0.187 gm Weight: 0.225 gm Weight: 0.227 gm Weight: 0.281 gm
Features: Part slice Features: Part slice Features: Part slice Features: Part slice Features: Part slice
$64 $66 $78 $79 $96

#NWA8657-303 #NWA8657-318 #NWA8657-339 #NWA8657-343 #NWA8657-3971
Weight: 0.303 gm Weight: 0.318 gm Weight: 0.339 gm Weight: 0.343 gm Weight: 0.397 gm
Features: Part slice Features: Part slice Features: Part slice Features: Part slice Features: Part slice
$103 $108 $115 $116 $134

#NWA8657-407 #NWA8657-489 #NWA8657-494 #NWA8657-537 #NWA8657-614
Weight: 0.407 gm Weight: 0.489 gm Weight: 0.494 gm Weight: 0.537 gm Weight: 0.614 gm
Features: Part slice Features: Part slice Features: Part slice Features: Part slice Features: Part slice
$137 $164 $166 $180 $205

#NWA8657-693 #NWA8657-730 #NWA8657-844 #NWA8657-1-024 #NWA8657-1-051
Weight: 0.693 gm Weight: 0.730 gm Weight: 0.844 gm Weight: 1.024 gm Weight: 1.051 gm
Features: Part slice Features: Part slice Features: Part slice Features: Part slice Features: Part slice
$230 $242 $279 $338 $347

#NWA8657-1-144 #NWA8657-1-386 #NWA8657-1-387 #NWA8657-1-542 #NWA8657-1-784
Weight: 1.144 gm Weight: 1.386 gm Weight: 1.387 gm Weight: 1.542 gm Weight: 1.784 gm
Features: Part slice Features: Part slice Features: Part slice Features: Part slice Features: Part slice
$377 $455 $456 $506 $585

#NWA8657-1-952 #NWA8657-2-033 #NWA8657-2-320 #NWA8657-3-593 #NWA8657-3-784
Weight: 1.952 gm Weight: 2.033 gm Weight: 2.320 gm Weight: 3.593 gm Weight: 3.784 gm
Features: End Features: Part slice Features: Part slice Features: End Features: Slice
$639 $666 $585 $1083 $1140