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What determines how large the crystals in the igneous rock will be?
How fast the magma or lava cooled. How fast the rock cooled
Why do obisidian rocks have no crystals?
because the magma cooled so fast the little pieces of cooled magma bonded already so there is not enough space for the little pieces to grow into crystals. Similar to concrete the bricks are the pieces of already cooled magma. But then the concrete is immediately poured onto the brick t=and cooled in 1 second and hardened. That does not allow space for the bricks to grow as everything is bonded and no more magma is left to add to the pieces to make them bigger.
Volcanic glass forms when magma cools very quickly?
Yes obsidian is glassy because it cooled very fast.
What do small crystals in an igneous rock mean?
The size of the crystals in an igneous rock tells us how fast the magma cooled.
What type of rock that forms from magma or lava is rock?
Igneous rock is formed from the cooling of magma or lava.
What is the origin of obsiadan?
If you are asking about how they were formed magma from volcano that are shot in the air of quickly spewed out causing the magma to cool very quickly forming a very smooth surface on obsidian. Becuase the magma cooled so fast it couldn't slowly cool into a rough textured rock.
What determines how large the crystals in an igneous rock will be?
The cooling rate of magma determines the size of crystals in an igneous rock. Slow cooling allows larger crystals to form, while rapid cooling results in smaller crystals or a glassy texture. Other factors such as mineral composition and amount of available space for crystal growth also influence crystal size.
Does magma beneath the surface cool fast?
Magma beneath the surface typically cools slowly, allowing for the formation of large crystals. This slow cooling process is known as intrusive or plutonic cooling. In contrast, lava that reaches the surface cools much more quickly due to exposure to lower temperatures and can form smaller crystals or glassy textures.
Where in the world is pumice found?
Pumice is formed from magma coming out of volcanoes where rhyolite would have formed, (Destructive plate margin), but has cooled so fast that it appears glassy, and almost non-crystalline.
When magma cools too fast what happens to the size of the crystals?
When magma cools fast, crystals are small.Less time to form crsytalsWhen magma cools slow, crystals are large.More time to form crystalsWhen magma cools very fast, crystals do not form; nothing.Very less time to formWhen magma cools very slow, large crystals form; a LOT.A lot more time to form
How fast does the magma from an erupted volcano go?
it go pretty fast
Will crystals be small if magma cools fast?
Yes they will
