Yearmend gold deposit occurred in the second member of Dahalajunshan formation of lower Carboniferous

Dahalajunshan formation (especially its second member) is the source bed for forming the deposit. The deposit has a similar geochemistry characteristics with its source bed. On the base of source bed

gold was concentrated again by metasomatism and alteration of silication of hydrothermal water (mainly meteoric groundwater) and then the type of solicified gold deposit was formed.