Abstract:

 This is a review on the accessory mineral geochemistry. Rapid successful developments of accessory mineral geothermometer have been achieved because of the evident progress in high precision insitu analyses and mineral synthetic techniques.  Accessory mineral thermometer, especially zircon,  and next rutile, garnet, and sphene are introduced systematically in this paper. The combined experimental and natural mineral analyses define that the contents of trace elements between accessory mineral and associated minerals varies in linear dependence upon temperature and oxygen fugacity, and the equations for different accessory minerals thermometers are given by many researchers. The Th/U ratios, used as an indictor of zircon genesis, must be treated with caution. REE distribution patterns in metamorphosed or hydrothermal zircons and apatites are discussed and their implications for petrogenesis are introduced.

Key words: accessory mineral, geothermometer, zircon, oxygen fugacity, apatite, trace elements