the.com/igneous rock
Lava's autobiography, written in crystals the moment it stopped yelling and cooled down.
means Rock formed when molten magma or lava cools and solidifies into interlocking crystals, either slowly underground or quickly at the surface.
from From Latin 'igneus' meaning 'of fire,' from 'ignis,' 'fire' — the same root that gives English 'ignite' and 'ignition.' Geologists adopted the term to classify rock born directly from molten material, distinguishing it from sedimentary rock (built from settled debris) and metamorphic rock (transformed by heat and pressure without fully melting).
- name origin
- from latin ignis, meaning fire
- cooling speed
- slow cooling underground makes bigger crystals
- obsidian secret
- cools so fast it skips crystals entirely, becomes glass
- moon rocks
- nearly all lunar samples are igneous