Goldschmidt's rules In a system where the two variables, temperature and pressure, are controlled externally, the number of phases will not usually exceed the number of components. In geology the maximum number of naturally occurring minerals in a rock is equal to the number of components where a given mineral assemblage is stable over a range of temperatures and pressures.
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Diagenesis , diagenesis All the changes that take place in a sediment at low temperature and pressure after deposition. With increasing temperature and pressure,… Metastable , metastable Applied to a phase which is apparently stable but is capable of reaction if disturbed, a state usually due to the slowness of a system to… Shock Metamorphism , Except for certain laboratory experiments and outdoor detonations of high explosives (including nuclear weapons), evidence of shock metamorphic condi… Pressure Melting , pressure melting The melting of ice in response to stress. It comes about because the freezing temperature of water falls as pressure increases, at a… Boiling Point , The boiling point of a liquid substance is the temperature at which the vapor pressure of the liquid equals the external pressure on the liquid. Vapo… Partial Melting , A process known as partial melting generates the molten rock , known as magma , that cools to form crystalline rocks in the earth's outer composition…
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