For Sale IconNWA2400 Ungrouped Achondrite Meteorites for Sale

Location: Northwest Africa, exact location unknown.

Found: 2003

Type: Stone, Ungrouped Achondrite

Description: A 137 g light tan to rusty brown, fully crusted stone was purchased in Rissani, Morocco in April 2003. Description and classification (T. Bunch and J. Wittke, NAU ; A. Irving and S. Kuehner, UWS ): composed mainly of approximately mm-sized, randomly oriented pigeonite (Fs 64-64.8 Wo 5.6-6.4 ) with very fine, parallel exsolution lamellae of augite (Fs 38-49.1 Wo 36.7-23 ), and interstitial, recrystallized plagioclase (<0.10 mm in size, ~An 86 Or 0.5 ) with prominent triple junctions, and rare, unrecrystallized, tabular plagioclase relicts (<1 mm, zoned from An 80 to An 89 ). FeO/MnO ratios for all pyroxenes range from 59.5 to 68.7 (avg. 64.7). Only small amounts of pyroxene are present in the recrystallized zones. Accessory minerals occurring predominantly in the recrystallized plagioclase zones include a silica polymorph, chromite [Cr/(Cr + Al) = 83, Fe/(Fe + Mg) = 67], ilmenite (53.5 wt. % TiO 2 , 43.6 wt. % FeO; with small baddeleyite inclusions), merrillite (some with minor amounts of Na 2 O, MgO, and FeO), Zn-bearing troilite, pentlandite, Cr-ulvöspinel and altered Fe metal (associated with minor troilite, barite and calcite). Shock damage is not apparent and, with the exception of the oxidation of minor metal, weathering effects are very low. Oxygen isotopes (D. Rumble, CIW ): replicate analyses by laser fluorination gave δ 17 O = - 0.15 ± 0.1, δ 18 O = 3.27 ± 0.2, Δ 17 O = -1.57 ± 0.03 per mil. In its texture, mineral mode, mineral compositions and oxygen isotope composition NWA 2400 is nearly identical to the anomalous achondrite NWA 011 (Yamaguchi et al., 2002; Promprated et al., 2003), which strongly indicates that these two stones are paired.

Link to Meteoritical Bulletin Database.

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#NWA2400-998 #NWA2400-2-028 #NWA2400-2-249 #NWA2400-2-692 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: 0.998 gm Weight: 2.028 gm Weight: 2.249 gm Weight: 2.692 gm
Features: Slice Features: Slice Features: Slice Features: Slice
Price: sold Price: sold Price: sold Price: sold

#NWA2400-4-244 #NWA2400-5-700 #NWA2400-6-418 #NWA2400-54-701
Weight: 4.244 gm Weight: 5.700 gm Weight: 6.418 gm Weight: 54.701 gm
Features: Slice Features: Slice Features: Slice Features: End
Price: sold Price: sold Price: sold Price: sold