Estimates of pressure and temperature (geothermobarometry)
Estimates of other physico-chemical conditions such as acidity (pH) and oxidation state (eH)
Partial pressures of gases (e.g. fugacities of H2O, CO2 , etc.)
Partitioning of major and trace elements between phases (e.g. minerals, melts and/or fluids) to characterize and quantify petrogenetic processes; and
Use of minerals in geochronology and thermochronology