Libian desert glass (LDG). Impactite. - 39.1 g

The Libyan Desert glass is an impact glass, meaning it is the result of a meteorite impact on Earth, this happened about 29 million years ago, leaving fragments over tens of kilometers along the Libya–Egypt border.
This mysterious glass has always fascinated human civilizations; it was worked and used to make lithic tools during the Pleistocene.
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