It can be melted, but would form the same type of rock when it was cooled and hardened again, the structure depending on how it cooled and how fast.
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Sedimentary Rock which becomes heated and pressed and Igneous Rock which is also heated and compressed.
When rock is heated it becomes enlarged. If the rock becomes too hot from the heat it will break and crack.
The rock melts, just like most other solids do when heated. Magma is to rock as water is to ice.
a metamorphic rock
metamorphic rock
If heated to a high enough temperature yes, rock will boil.
yes it has to be heated in water in a supersaturated solution.
Limestone is the rock that is squeezed and heated to form marble. The high pressures and temperatures cause the limestone to recrystallize and become the metamorphic rock known as marble.
ones it get pressure and heated
nitrogen
If it is heated.