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Obsidian is produced from felsic lava, rich in the lighter elements such as silicon, oxygen, aluminum, sodium, and potassium. It is commonly found within the margins of rhyolitic lava flows known as obsidian flows. These flows have a high content of silica, giving them a high viscosity.
Where is obsidian found? Some of the best-known occurrences of obsidian are at Mount Hekla in Iceland, the Eolie Islands off the coast of Italy, and Obsidian Cliff in Yellowstone National Park, U.S. Most obsidian is found in association with volcanic rocks and forms the upper portion of rhyolitic lava flows, though it can also occur as thin ...
Obsidian abounds in the Western portion of the United States, and can often be found in large quantities. Some of these areas are even open to the public! Without further ado, let’s dig into the best places to find obsidian in the United States.
Obsidian is found in many locations worldwide. It is confined to areas of geologically recent volcanic activity. Obsidian older than a few million years is rare because the glassy rock is rapidly destroyed or altered by weathering, heat, or other processes.
Geological Setting: Obsidian is commonly found in volcanic regions around the world, typically associated with eruptions of rhyolitic or dacitic lava, which are high in silica content.
Where Is Obsidian Found? Obsidian is a fairly common rock that can be found in localities all around the world. The magma type from which it forms is often found in a specific but relatively common geologic setting, making obsidian somewhat accessible to collectors and enthusiasts everywhere.
Some of the best-known occurrences of obsidian are at Mount Hekla in Iceland, the Eolie Islands off the coast of Italy, and Obsidian Cliff in Yellowstone National Park, U.S.