what do granite and basalt have in common

Granite and basalt have several key things in common: both are igneous rocks that form from cooled molten material (magma or lava), both are rich in silicate minerals, and both are very common and important in Earth’s crust.

Same rock family

• Both are igneous rocks, meaning they crystallize from molten rock as part of the rock cycle.

• Both are primarily made of silicate minerals such as feldspar and pyroxene, so they are classified as silicate rocks.

Similar geological role

• Both are widespread on Earth and make up large parts of the crust, with basalt dominating the oceanic crust and granite common in continental crust.

• Both are hard, durable rocks that resist weathering and are used as strong construction materials in things like building stone, road base, and monuments.

TL;DR: Granite and basalt are both hard, common, silicate igneous rocks that formed from cooling magma/lava and play major roles in building Earth’s crust.