Igneous Rocks (formed from cooling and solidifying magma or lava):
* Granite: A light-colored, coarse-grained rock rich in quartz and feldspar.
* Basalt: A dark-colored, fine-grained rock rich in magnesium and iron.
* Gabbro: A dark-colored, coarse-grained rock similar to basalt.
* Rhyolite: A light-colored, fine-grained rock rich in silica.
* Obsidian: A dark-colored, glassy rock formed from rapidly cooling lava.
Sedimentary Rocks (formed from the accumulation and cementation of sediments):
* Sandstone: A rock composed of sand grains cemented together.
* Limestone: A rock primarily composed of calcium carbonate, often formed from the accumulation of marine organisms.
* Conglomerate: A rock composed of rounded gravel cemented together.
* Shale: A fine-grained rock formed from compacted clay.
* Rock Salt: A rock formed from the evaporation of ancient seas.
Metamorphic Rocks (formed from the transformation of existing rocks under heat and pressure):
* Marble: A metamorphic rock derived from limestone.
* Slate: A metamorphic rock derived from shale.
* Gneiss: A metamorphic rock with a banded appearance.
* Quartzite: A metamorphic rock derived from sandstone.
* Schist: A metamorphic rock with a foliated texture.
Other Inorganic Rocks:
* Meteorites: Rocks of extraterrestrial origin.
* Tektites: Glassy rocks formed from the impact of meteorites.
Note: While the vast majority of rocks are inorganic, there are also organic rocks such as coal, which is formed from the accumulation and compression of plant matter.
