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What happens to sand when it comes in contact with lava?

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Great answer from Poonam Sharma. There is an easier way to see the case: sand and lava are roughly of the same composition, mainly silicates. So sand will melt into lava, as much as water ice will melt into liquid water. read more

The temperature of lava when it is first ejected from a volcanic vent can vary between 700 and 1,200 degrees C (1,300 to 2,200 F). The melting point of sand, which is predominantly silicon dioxide, is incredibly high requiring a temperature of (1,610 °C). The boiling point of SiO2 is (2,230 °C). read more

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