Reidite

Reidite is a rare mineral that has been found only in four crater impacts: the Chesapeake Bay Crater in Virginia, Ries Crater in Germany, Xiuyan Crater in China, and Rock Elm Crater in Wisconsin in the United States.

In 2015 an occurrence of reidite was reported from the Precambrian Stac Fada Member structure in North West Scotland, confirming its impact origin.