It’s far more badass, because it started out as silica-rich magma, eventually erupting as a viscous surface lava flow. This molten earth origin is what classes rainbow obsidian as an igneous rock.

Hawaii’s Kilauea volcano is at it again, with lava from the latest eruptive episode shooting nearly 600 feet into the air ... that were feeding short lava flows. However, those heights increased ...

HONOLULU — Lava from a Hawaii volcano shot into the sky Tuesday in tall fountains ... What began in the morning with sporadic, small flows became continuous fountaining in the afternoon, the ...

“Obsidian glass, that is a volcanic glass, forms when lava is very quickly cooled, for example, where it enters into water,” Giordano added. However, the pyroclastic flows, composed of fast ...

GRAND RAPIDS, Mich. (WOOD) — When people think of volcanoes, they don’t typically think of Michigan. But volcanic activity was the driving force behind some of Michigan’s key resources and ...