摘要
Zonation is an important characteristic and an important method to explore and evaluate hydrothermal deposits.Complete zonation mode must been founded to predicate the deep and surrounding resource of mine,which require sample analysis data of different level.However,in some case,there has less engineering at early exploration.The steeply dipping ore bodies will result difficult to make sure the level location because of the apparent thickness of primary halo and ore-body in drill hole.In this paper,author analized the sample of the different level of No.1vein in Hongshi gold deposit,adopts"Gregorian method","Kvyatkovsky method"and"barycenter method"to define the zonation mode of primary halo.The results are identical with the actual according to exploration.It is effective methods.