basalt
The type of rock would be igneous.
A type of rock with the special propery double refraction
Basalt
Most of the Earth's crust is made up of igneous rock. This is because igneous rocks are formed when magma cools and solidifies, which commonly occurs near the Earth's surface. Over time, the continuous cycling of geological processes leads to the formation and reformation of igneous rocks, making them the predominant rock type in the Earth's crust.
Sedimentary rock covers most of the Earth's surface. This type of rock forms from the accumulation of sediments like sand, mud, and organic material, and it can be found in layers all over the planet.
well i guess it would be black and hard like all other rock that come from volcanoes but remember the volcano is in iceland.
you are dum
Igneous rock comprises the majority of Earth's crust.
The most powerful rock type move is either rock wrecker and head smash
iceland hello's
Iceland is a volcanic island.
Makes it hard .(: