Thursday, February 9, 2012

Mineral Formation

Minerals are formed in the Earth's crust by four major processes:
  • magma- molten rock in the crust, as it cools this magma crystallizes to form minerals.
  • precipitation- as water evaporates, the dissolved minerals are left behind (ex. limestone, gypsum).
  • high pressure/high temperature- these minerals can recrystallize deep within the Earth's crust.
  • hydrothermal solutions- hot water and dissolved substances can come into contact with existing minerals, and react to form new minerals.

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