Large Seymchan siderite meteorite slice, beautifully etched on both faces to reveal a complex lattice-like Widmanstätten pattern. The full etched slice weighs 742.9 grams and measures approximately 223 mm x 113 mm x 5 mm. Accompanied by a certificate of authenticity signed by Geoff Notkin of Aerolite Meteorites Inc. and the TV show Meteorite Men, as well as a specimen identification card.
Discovered in Siberia in 1967 by a Russian geologist, the Seymchan meteorite was originally classified as a IIE iron. Many years later, meteorite hunters were amazed to discover rare pallasite meteorites, rich in olivine crystals, at the same site. Some Seymchan specimens, such as this one, are entirely metallic and show a complex and angular geometric Widmanstätten pattern made up of different nickel-iron alloys—kamacite and taenite. It is a particularly hard meteorite and slices such as this are prepared in the lab using a diamond-tipped saw, then polished and treated with a mild solution of nitric acid to reveal the pattern.
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