Mystery yellow glass in Egyptian desert

[Still Waters]

A strange kind of yellow, exotic glass found across some of the world's desert regions has finally had its mysterious origins identified – almost 30 million years after it formed on Earth.

Libyan desert glass is a naturally occurring kind of glass that's found in the eastern stretches of the Sahara desert, in eastern Libya and western Egypt. Its rare yellow colour has seen it used decoratively going back to the age of Tutankhamun, but desert glass has been around a lot longer than that.

The formation of this strange glass has been dated as far back as some 29 million years ago, but it's never been entirely clear what forces brought the material into existence on Earth, although two major hypotheses have dominated the conversation.

https://www.sciencealert.com/exotic-glass-in-egypt-was-created-by-a-meteorite-impact-millions-of-years-ago

https://news.sky.com/story/scientists-solve-mystery-of-yellow-egyptian-desert-glass-11721232

[pallidin]

Good catch.

[Jon the frog]

Good detective works !

[mdbuilder]

How much of this glass can be accounted for? Are we talking multiple impacts or just one?