What type of rock is formed by any kind of rock?
All rock types can be formed from any other rock type.
Sedimentary rocks are formed when other rocks (igneous, metamorphic, or sedimentary) are weathered and eroded and their sediments are compacted and cemented together. Metamorphic rocks can be formed when heat and pressure is applied to any type of existing rock. Igneous rocks are formed when magma cools. The magma can be made up of melted rocks of any kind (sedimentary, igneous, or metamorphic). The cycle repeats itself all the time and all of the rocks…
Igneous rocks are one of three classifications of rocks. Igneous rocks are formed as a direct result of crystalline solids being formed by the cooling of magma. Sedimentary rocks are the result of pieces broken from chemical, clastic and organic rock. Metamorphic rocks can be any kind of rock and are formed when a rock goes through metamorphic changes, usually due to a buried rock coming in contact with unstable minerals.
Granite is a type of igneous rock. It mainly contain three types of crystallized mineral: quartz, mica, and feldspar. The word "granite" does not stand for any one type of those minerals, nor does it stand for the ore of any of those minerals, but the kind of rock with all these mineral crystals interlocking together.