Glass making is an art and a skill. It has been done by humans for many centuries, but Nature has been making it for thousands of years. Here are ten examples of natural glass found all over the globe.
Moldavite, a green Tektite, is mainly found in Czechia’s southern Bohemia. It was formed approximately 15 million years ago. Some specimens may contain Lechatelierite streaks in small amounts – go here.
Georgiaite, a dark olive-green Tektite formed 35million years ago. It is only found in the U.S. state Georgia. Because it is potassium-rich, but not other impurities, it’s close to qualifying as a Lechatelierite.
When a large meteor impacts sandy ground, tektite is formed. Lechatelierite is formed when the sand contains almost pure silica. Untrained eyes can mistake Tektites for Obsidian because they are almost all black.
Libyan Desert Glass, a type of Lechatelierite, is found in western Egypt and Libya. There are a lot of specimens at Kebira Crater which is believed to be the source of LDG. LDG formed around 29 million years ago from either a meteor impact, or an airburst. The latter is a meteor, or comet that exploded in Earth’s atmosphere, rather than hitting the surface.
Atacama Desert Glass
Atacama Desert Glass was named for the region in northern Chile where it can be found. This natural glass was formed from the result of an airburst. A comet that exploded over the area around 12,000 years ago is the most likely cause. A majority of ADG specimens are black. However, some may be dark green.
Edeowie, a type of natural glass that is found in South Australia, is an Australian state. It is not known where it came from. The top three possibilities are lightning strikes, meteor impact and high temperature grassland fires. The colors range from black to greyish green.