1 IntroductionThe association of organic matter in various forms (e.g.petroleum, gas, and coal) with a wide variety of ore-depositypes and its possible role in mineralization has long beenan interesting and controversial subject in geology andgeochemistry. The roles of organic matter in metatransportation and deposition have been extensively studiedand reviewed in the last two decades (e.g., Disnar andSureau, 1990; Manning and Gize, 1993; Landis and Gize1997; Zhang et al.,2001; Hu Kai et al…