Libyan Desert Glass rome Above: Moon Tree specimen at

Above: Moon Tree specimen at home with a Lego Lunar Lander

Note: The glass is so clear you can see the $1

which three times have caused a world fire

Length varies from 1

Libyan Desert Glass rome Above: Moon Tree specimen atComet impact glass! 28,500,000 years old! Above: Front of the Specimen Card. In the southeastern spur of North Africas Great Sand Sea, there are several fields of luminous, yellow green glass known as Libyan Desert Glass (LDG). Due to the lack of any visible impact crater, the most likely source is a low density asteroid or comet airburst explosion leading to the fusion of silica rich sands roughly 28,500,000 years ago.