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Volcanic glass
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Volcanic glass is the amorphous product of rapidly cooling magma. Like all types of glass, it is a state of matter intermediate between the closely packed, highly ordered array of a crystal and the hi
A sand grain of volcanic glass under the petrographic microscope. Its amorphous nature makes it disappear in cross-polarized light (bottom frame). The scale box is in millimeters.
A sand grain of volcanic glass under the petrographic microscope. Its amorphous nature makes it disappear in cross-polarized light (bottom frame). The
Volcanic glass (“Pele’s hair”) from Volcanoes National Park, Hawaii. Photo by Douglaspperkins, 2006. Public domain.
Volcanic glass (“Pele’s hair”) from Volcanoes National Park, Hawaii. Photo by Douglaspperkins, 2006. Public domain.
Glass
Videos
Glass is an amorphous solid. Because it is often transparent and chemically inert, glass has found widespread practical, technological, and decorative use in window panes, tableware, and optics. Some
Volcanic glass
…Volcanic glass is the amorphous (non-crystalline) product of rapidly cooling magma. Like all types of glass, it is a state of matter intermediate between the closely packed, highly ordered array of a crystal and the highly disordered array of liquid. Volcanic…
A glass building facade
A glass building facade
A piece of volcanic obsidian glass
A piece of volcanic obsidian glass
Moldavite, a natural glass formed by meteorite impact, from Besednice, Bohemia
Moldavite, a natural glass formed by meteorite impact, from Besednice, Bohemia
Tube fulgurites
Tube fulgurites