Muonionalusta

The mineral muonionalustaite, a hydrated nickel chloride, was first found as a weathering product from a meteorite sample.

Studies have shown it to be the oldest discovered meteorite impacting the Earth during the Quaternary Period, about one million years ago.

[3] For the first time, analysis has proved the presence of a form of quartz altered by extremely high pressure—stishovite,[3] probably a pseudomorphosis after tridymite.

The glass component might have formed directly as a shock melt....A 2010 study reported the lead isotope dating in the Muonionalusta meteorite and concluded the stishovite was from an impact event hundreds of millions of years ago: "The presence of stishovite signifies that this meteorite was heavily shocked, possibly during the 0.4 Ga [billion years] old breakup event indicated by cosmic ray exposure...."[4] Fragments of the Muonionalusta meteorite are held by numerous institutions around the world.

A part of the meteorite is used in the 25-pieces limited Rolls-Royce Tranquility Collection (Phantom VIII) Controller[8] and in the M850i xDrive Coupé Night Sky Edition by BMW.

Slice (across 9.6 cm) of a Muonionalusta meteorite fragment, showing the Widmanstätten pattern .