EXPERIMENTAL RESEARCH ON LEACHING OUT GOLD AND LEAD FROM ROCKS IN HYDROTHREMAL SYSTEM
Lin Erwei Jia Yiefei Lu Minjie(Measure and Analysis Central) (Deparment of Geology )
Most gold depodits distributing in the northern China are mainly connected with metamorphic rocks ,granites and tectonic conditions,which case is universally regarded as metallogenetic model of "trinity" . The source of metallogenetic elements .however ,is still a nonsolved question. It is not clearly known whether the el- ements provided by metamorphic rocks or granetes. Many of the gold deposits were normally accompanied by dispersion halo of lead. According to our research,the isotopic composition of lead is linearly distributed in the reginal scale. The authors suggest that granites and metamorphic rocks can be regarded as the source of gold deposits. The linear distribution of lead isotope can not be explained by its two-stage evolution model,but can be interpreted as the mixture of lead both from metamorphic rocks and granites.
【CateGory Index】： P611.3;;P579