THE MAJOR COMMERCIAL TYPES AND DISTRIBUTING CHARCTERS OF GOLD DEPOSITS IN CHINA

The most important types of gold deposits in China are auriferous quartz vein,auriferous altered cataclasite and auriferous nylonite ones.The distribution of gold deposits shows much difference between east and west China in the aspects of types and metallogenetic times.There are auriferous quarta vein,altered cataclasite,mylonite,adular-sericite quartz vein,breccia,skarn,gossan and laterite types in the east.where the metallogenetic epoch is mainly Yanshan period,only gossan and laterite types are formed in Quaternary period.In the northwest of China,auriferous altered cataclasite,adular-sericite quartz vein and quarta reef types are present,and metallogenetic epoch is mainly Hercynian period.Fine impregnated mineralization,auriferous quartz vein,altered cataclasite and laterite types occur in southwest China,and the metallogenetic epoch is mainly Indosinian-Himalayan period.Auriferous sandy gravel type is present in every metallogenic provinces in China.