Achondrite primitive Winonaite Northwest Africa (NWA...

orthwest Africa (NWA 16203) Primitive chondrite (Winonaite) - 15 g Nigeria Classification: Primitive Winonaite chondrite The meteorite shows a strongly recrystallized fabric with abundant intergranular triple junctions between adjacent mineral grains and is composed mainly of Mg-rich, low-Ca pyroxene of about 100-300 μm, forsteritic olivine, diopside, and FeNi metal partially altered. Minor phases include sodium feldspar and FeS. The shipment will be accompanied by a certificate of authenticity!

估價:$168.39

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