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Titanite(CaTi2SiO5) is an important accessory mineral not only in magmatic and metamorphic rocks,but also commonly in hydrothermal mineral deposits. It incorporates appreciable amounts(usually 10×10-6 s to 100×10-6 s) of U and Th into its structure and has a closure temperature of Pb diffusion higher than 660～700 ℃(Scott and St-Onge,1995) ,making it an ideal U-Th-Pb geochronometer. The Daye metallogenic district is located in the west of the giant Middle-Lower Yangtze River(MLYR) Cu-Fe-Au province,eastern China and is well endowed with Fe,Cu,and polymetallic skarn deposits.
Titanite (CaTi2SiO5) is an important accessory mineral not only in magmatic and metamorphic rocks, but also commonly in hydrothermal mineral deposits. It incorporates appreciable amounts (usually 10 × 10-6 s to 100 × 10-6 s) of U and Th into Its structure and has a closure temperature of Pb diffusion higher than 660-700 ° C (Scott and St-Onge, 1995), making it an ideal U-Th-Pb geochronometer. The Daye metallogenic district is located in the west of the giant Middle -Lower Yangtze River (MLYR) Cu-Fe-Au province, eastern China and is well endowed with Fe, Cu, and polymetallic skarn deposits.