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Intrusive igneous rocks have a shiny appearance because they form slowly, giving them larger crystals.

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15y ago

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What is the luster of igneous rock?

i think that igneous and metamorphic rocks uses luster because maybe they have it in them


Is a sedimentary rock dull or shiny?

Sedimentary rocks are typically dull in appearance due to their fine-grained texture and lack of large crystals. Shiny rocks are more commonly associated with igneous or metamorphic rocks that have undergone recrystallization processes.


Why do igneous rocks that cool quickly have smooth and shiny textures?

Igneous rocks that cool quickly do not have time to form large crystals. This results in a fine-grained texture that appears smooth and may reflect light in a shiny manner. Examples of these rocks include basalt and obsidian.


Is a igneous rock shiny?

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What is a shiny mineral that occurs in sheets?

Mica is a shiny mineral that occurs in sheets. It is composed of thin, flat sheets that can easily be peeled apart. Mica is commonly found in igneous and metamorphic rocks.


What is the shiny stuff in a rock called?

Most extrusive igneous rocks are usually shiny and smooth. This is because, they cool, solidify, and crystalize rapidly on the earth's surface, where there is less obstruction, and no enclosures.


Is metamorphic rock usually shiny or sparkly?

Yes, metamorphic rocks can exhibit shiny or sparkly appearances due to the re-crystallization of minerals under high pressure and temperature. The presence of minerals like mica or quartz can give them a reflective or glittery quality.


What rocks contain mica?

I'm not sure of the specifics, but metamorphic rocks usually have it. Yo face


What are the physical appearances of aluminum?

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Do Metals have shiny appearances?

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What are every day uses of obsidian?

It can be use for jewellery and stone age arrowheads, as the obsidian was much sharper when made into a specific shape. It can be sharpened to a very thin thickness. It is very shiny and is black. This is why Obsidian is common to be used in jewellery. Obsidian is igneous rock, which means that it was formed either inside (intrusive) or outside (extrusive) of the volcano. Igneous rocks are basically cooled lava, or magma.


What is an example of a magic igneous rock?

Obsidian is a type of magic igneous rock known for its dark color and shiny appearance. It is created when lava cools quickly, and it is often used in rituals or for scrying due to its believed mystical properties.