*The Muonionalusta is a meteorite classified as fine octahedrite which impacted in northern Scandinavia, west of the border between Sweden and Finland, about one million years BCE. It is also probably the oldest known meteorite (4.5653 billion years). The first fragment of the Muonionalusta was found in 1906, and more has been discovered approximately 140 kilometers north of the Arctic Circle.
The natural lines, formally known as “Widmanstattwn Patterns” is the biggest feature of this meteorite type. It is also very difficult to be found, usually in deep underground; specialized hunters use professional tools and skills in order to search them.