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Igneous rock that cools very quickly when it forms may have a texture that is what?
A texture characterized by tiny mineral grains or a glassy appearance.
What rock has large mineral grains?
Fine grains of rocks are referred to as "clasts." The word "clast" comes from the Greek word "klastos," meaning "broken."
How could you distinguish pumice and granite?
Granite is a dense, non-porous rock with visible mineral grains. Pumice is a light rock filled with holes left by gas bubbles and generally no visible grains.
How is the size of the mineral grains affect by the rate at which molten rock material rock?
The slower the rate of cooling the larger the size of the crystals that can develop.
What type of texture does slate rock have?
Slate rock has a fine-grained texture, with individual mineral grains that are too small to be seen with the naked eye. This gives slate a smooth and dense appearance.
What is a rock with long flat mineral grains?
A rock with long flat mineral grains is likely to be schist. Schist is a metamorphic rock characterized by its foliated texture, with mineral grains aligned in a parallel fashion, giving it a distinct layered appearance.
Is sandstone a mineral?
No. Sandstone is not a mineral, it is a rock type.
Which rock has large mineral grains?
Granite is a rock that typically has large mineral grains due to its slow cooling process deep within the Earth's crust, allowing for the growth of visible crystals. This gives granite its characteristic speckled appearance and coarse texture.
What kind of texture does a grain rock have?
A grain rock typically has a coarse to medium texture, characterized by visible grains or crystals that can be distinguished by the naked eye. The texture may vary depending on the size and arrangement of the mineral grains, which can be angular or rounded. Additionally, the rock may exhibit a rough feel due to the interlocking nature of the grains. Overall, the texture reflects the rock's formation process and mineral composition.
Is fine grained sedimentary rock smooth?
Fine-grained sedimentary rocks are typically smooth in texture due to their small grain size, which makes it difficult to discern individual grains with the naked eye. The smoothness can vary depending on factors such as the mineral composition and the level of compaction of the rock.
Does obsidian rock contain few or no mineral grains?
Obsidian is a type of volcanic glass that lacks a crystalline structure, so it does not contain mineral grains. It forms from quickly cooling lava rich in silica, resulting in a smooth, glassy texture without distinct mineral crystals.
A rock whose mineral grains are not formed in bands is called?
Rock
