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Granite forms underground where magma cools slowly, allowing relatively large crystals to form. Rhyolite forms above ground as lava cools quickly, meaning that any crystals will be small.

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Q: Granite and ryholite have similar composition but granite is course-grained whereas rhyolite is fine grained what is the difference?
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Related questions

What has a lower density rhyolite or basalt?

Ryholite due to the reason that this rock is made up of lighter elements than that of Basalt


An extrusive rock with a composition similar to granite but with smaller crystals?

ryholite


What rock has a lower density basalt or rhyolite?

Ryholite due to the reason that this rock is made up of lighter elements than that of Basalt


How does ryholite form?

The large number of websites I have searched through say that Ryolite is a formation of volcanic rock similar to granite


What is an igneous rock and how does it form?

An igneous rock is a rock formed by the solidification of molten lava. some examples of this rock type are: Pumice, Obsidian, Basalt, Andesite, and Ryholite.