Rocks with large mineral grains are called phaneritic. This term describes the texture of igneous rocks, meaning rocks formed from cooled and solidified magma or lava.

Here are some examples of phaneritic rocks with large mineral grains:

* Granite: A common and well-known phaneritic rock with large, easily identifiable grains of quartz, feldspar, and mica.

* Diorite: Similar to granite but with less quartz and more plagioclase feldspar.

* Gabbro: A dark-colored phaneritic rock with large crystals of pyroxene and plagioclase feldspar.

* Syenite: A phaneritic rock dominated by alkali feldspar.

The size of the mineral grains in a phaneritic rock is determined by the rate at which the magma or lava cooled. Slow cooling allows for the formation of large crystals, while rapid cooling results in smaller crystals or even a glassy texture.