Volcanic Glass

Of volcanic rock.

A kind of natural glass produced when molten lava cools very rapidly.

This concept's ID is @1~75260

Contains

  • obsidian 0 facts

    Acid or granitic glass formed by the rapid cooling of lava without crystallization; usually...

  • tachylite 0 facts

    A basic or basalt glass.

  • pitchstone 0 facts

    Dark acid granitic glass.