But every single piece of Libyan glass, all 1000+ tonnes of it, is 98% silicon dioxide and some of it is clear with no colourings demonstrating that there is no iron present at all (100% glass). Some pieces are as big as a football and weigh over 25 kg. All other tektites around the world are tiny (1-2 inches) in comparison, are only 60% glass, and occur in distinctive shapes as dumbbells, rods, spheres, disks, and teardrops; which Libyan glass never does.
Silica glass has been found at other known meteor impact sites, but the glass there is blackened and fragmented, and is embedded in a matrix of fused and broken rock. LDG seems too clear and pure to have been created this way.
and
…most Libyan Desert glass is much more dense and homogeneous than the well described porous and impure “impact” glass (impactite) found in such craters as Henbury in central Australia, Wabar in the Rub’al-Khali of Saudi Arabia.
and
The glass cannot have been fused from the local exposed sandstone.
Of course it didn’t! Libyan glass and Nubian sandstone have different chemical compositions and ratios.
There are also no impact craters in the area, but maybe they haven’t been found yet in the sand?
… there are no meteor craters detectable from satellite photos with a resolution of ~5m within 150 km. No Libyan Desert Glass has been found at the nearest meteorite crater, located in Libya, ~150km to the west.
One attempt to place a large crater nearby has been dismissed by an expedition tourist visiting the site, who said:
In the photo, many bands and layers of sedimentary rock can be seen. This is not a hard cap of crystalline melt sheet on top of softer rock. I do not think that this is a crater site.
Attached: libyan-glass-300x232.jpg (300x232, 21K)