very layered and covered in spots ussually, they are always permable and let bwate through
The texture of Andesite rock is fine-grained and it Extrusive plus it is an igneous rock .
texture
Pegmatite texture is a coarse-grained igneous rock texture characterized by exceptionally large crystals. These crystals can be several centimeters to several meters in size. The slow cooling of molten rock in pegmatite formations allows for the growth of such large crystals.
It's texture is porphyritic
Texture
The size of the mineral crystals in an igneous rock determines the rock's 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
the rate the melted rock cools
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.
texture
texture
Pegmatite texture is a coarse-grained igneous rock texture characterized by exceptionally large crystals. These crystals can be several centimeters to several meters in size. The slow cooling of molten rock in pegmatite formations allows for the growth of such large crystals.
The size of crystals in an igneous rock is called texture. Texture can range from fine-grained (small crystals) to coarse-grained (large crystals).
Obsidian is an igneous rock that has a smooth glass-like texture. It is formed when lava cools rapidly without crystal formation, resulting in a glassy texture.