the rate the melted rock cools
The size of the mineral crystals in an igneous rock determines the rock's texture.
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An igneous rock is any crystalline or glassy rock that forms from cooling of a magma. Color and texture help determine the chemical composition of the rock.
The texture is mostly determined by the time spent in cooling from magma or lava. The quicker the transition from molten to solid, the finer the texture.
Phaneritic is the texture of igneous rocks. These types of rocks crystallized slowly.
fined grain texture
The texture of Andesite rock is fine-grained and it Extrusive plus it is an igneous rock .
coarse texture
by the texture
texture
texture
Intrusive igneous rock has a coarse, visible crystalline texture. Intrusive igneous rocks are formed from slow cooling of magma. The additional time spent in a liquid state allows for the creation of larger mineral crystals. An igneous rock with a coarse texture is said to be phaneritic.