Igneous rock.
It is an igneous extrusive rock but it is still lava. As such it is called after the principle type such as Basalt lava, obsidian flows, rhyolite lava, andesite lava, phonolite lava.
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Lava that has hardened is call volcanic or extrusive igneous rock. The exact type will vary.
Lava does not dry, but solidifies from cooling, much as water turns to ice. Erupted lava solidifies into extrusive igneous rock.
A slab of volcanic rock is called a "lava flow" or a "lava rock".
Magma that reaches the surface it is called lava.Molten rock from the Earth's interior that breaks through to the surface is called lava
Molten rock that reaches the Earth's surface is called lava.
Molten rock that pours out of a volcano is called lava. Lava is the liquid rock that flows from a volcano during an eruption.
Molten rock that reaches the Earth's surface is called lava.