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NWA 1836

 

 

NWA 1836

Found Sahara, 2002

Achondrite, Vestan

Eucrite (Melted)

Specimen is a 0.71g crusted slice

 

 

 

Classification and mineralogy (T. Bunch and J. Wittke, NAU): highly contorted mass of eucrite clasts with cataclastic mantles that are in turn covered by partially melted to recrystallized masses. Cumulate texture with subophitic enclaves. Clast orthopyroxene, Fs56.4–59Wo2.5–4; exsolution lamellae, Fs43.4-46.3Wo23-25.6; recrystallized zone, Fs54.5–57.5Wo8.4–13.5. Chromite, Cr/(Cr+Al) = 0.85, TiO2 = 14.6 wt. % with exsolution lamellae of ilmenite; plagioclase, An91–93.6. Shock level, S1 to S5. The meteorite is very fresh...

6320元台幣



 
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