Muonionalusta Meteorite Fragment, Northern Sweden

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A fragment of an iron-nickel meteorite was found in 1906 in a tundra near the Muonio River close to the border of Finland. Its discovery was significant because it was the first time stishovite--a very rare dense tetragonal form of silicon dioxide--was found in a meteorite. It shows excellent "widmanstatten" pattern (only formed in outer space by extremely slow cooling). Its composition contains elements such as nickel, stishovite, gallium, and iridium. 

 

Size: .69 x .44 x .13 inches