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What type of rock is pumice?

April 26, 2017pumice rock type

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What type of rock is pumice?

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Pumice rocks are igneous rocks which are formed when lava cooled rapidly by water. This rock is so light, that many of these rocks will float in water. It is composed of highly microvesicular glass pyroclastic with very thin and translucent bubble walls of extrusive igneous rock.