What is rock? Definition and Examples

What is rock? Definition and Examples

Rock is aggregate of one or more minerals. Since the crust of earth is composed of rock, a rock may also be called as a unit of earth crust. Based on the mode of formation rocks can be classified as Igneous, Sedimentary and metamorphic rocks.

Example

  1. Granite a rock constituting Quartz and Felspar.
  2. Quartzite – a rock mainly consisting of Quartz.

Rock is aggregate of one or more minerals. Since the crust of earth is composed of rock, a rock may also be called as a unit of earth crust. Based on the mode of formation rocks can be classified as Igneous, Sedimentary and metamorphic rocks.

Example

  1. Granite a rock constituting Quartz and Felspar.
  2. Quartzite – a rock mainly consisting of Quartz.