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Is diorite's texture a aphanitic?
Yes diorite's texture is aphanitic.
What kind of texture will an igneous rock have if it cooled very quickly and you can not see crystals?
The texture thus described is referred to as aphanitic texture.
What is Andesite texture?
Andesite texture is fine-grained and Extrusive plus it a type of igneous rock.
Is rhyolite's texture a aphanitic?
Rhyolite may be aphanitic or porphyritic.
What is igneous rock with small crystals called?
The rock is said to be extrusive or possess an aphanitic texture, as a result of relatively rapid cooling.
If there are small crystals in a rock what is it called?
The rock is said to have a fine-grained texture, also referred to as an aphanitic texture.
A rock that cools very quickly so that few or no mineral grains form is?
You can describe the rock by the process that allowed it to cool quickly: "Extrusive" or you can describe it by its texture: "aphanitic". An extrusive rock tends to be aphanitic = Rocks formed from lava flows tend to have small crystals.
Is diorite's texture a aphanitic?
Yes diorite's texture is aphanitic.
What kind of texture will an igneous rock have if it cooled very quickly and you can not see crystals?
The texture thus described is referred to as aphanitic texture.
What is Andesite texture?
Andesite texture is fine-grained and Extrusive plus it a type of igneous rock.
Is rhyolite's texture a aphanitic?
Rhyolite may be aphanitic or porphyritic.
What is igneous rock with small crystals called?
The rock is said to be extrusive or possess an aphanitic texture, as a result of relatively rapid cooling.
What type of texture do extrusive rock such as basalt have?
Small grained texture from small crystal size.
What igneous rock is aphanitic texture?
These are igneous rocks that are too fine textured to an extent that there mineral grains or crystalline texture cannot be seen or distinguished with the necked or unaided eyes. They appear or occur as a whole single massive crystalline extrusive body of Igneous origin. Example is Obsidian.
What is the type of crystal grain that forms when molten rock cools quickly?
Small crystal grains form from rapid cooling of magma resulting in an aphanitic rock texture.
What is the origin of rhyolite?
Rhyolite forms when the felsic magma (greater than 63% SiO2 by weight) came out to the earth surface and can be identified by its aphanitic texture ( The individual crystals in an aphanitic igneous rock are not distinguisable to the naked eye)
How is the texture of an igneous rock used to identify the conditions under which the rock formed?
The three main categories of igneous rock texture are aphanitic, phaneritic, and porphyritic. Aphanitic texture is described as a crystalline igneous structure that is too small to be seen with the naked eye. This texture indicates that the rock was cooled at or near the surface, quickly, with little time for crystal growth. Phaneritic texture is described as a rock with a visible crystalline structure, indicating that the rock was cooled slowly from magma underground, allowing ample time for crystal growth. Porphyritic texture is the presence of larger, visible phenocrysts suspended in a larger aphanitic matrix. This indicates a two-stage cooling process, where some minerals developed slowly underground in magma which was then erupted on the surface, causing the remaining minerals to form quickly.
