It is mineral
Large crystals with a coarse crystal grain texture.
crystal
The texture of the rock product of slow cooling magma is referred to as coarse grained.
its false
Fine crystal grain.
Fine
fine
Small crystal grains form when molten rock cools quickly. In an extrusive igneous rock, it's referred to as aphanitic texture.
Quartz
Igneous rocks are formed when molten magma cools and solidifies either beneath the Earth's surface (intrusive) or on the surface (extrusive). Intrusive igneous rocks are formed from magma that cools slowly underground, while extrusive igneous rocks are formed from lava that cools quickly on the surface.
When molten rock cools quickly, fine-grained crystals form. This happens because there is not enough time for larger crystals to grow before the rock solidifies, resulting in smaller crystals being formed.
Igneous rock