Glass Butte
Obisdian is formed when basalt cools rapidly, not allowing the time needed for crystals to form, therefore the basalt forms into a glass. There are many different types of obsidian that can be found at Glass Butte, including black/mohagany [Picture], goldsheen, silversheen, peacock, fire and more.
Glass Butte is overall the best place in Oregon to find obsidian. The rolling hills in this area are literally overflowing with the glass, and if you look hard enough and long enough you can find some exceptionally nice pieces of obsidian.
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