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InNanlin,alargenumberofPb-ZndcpositsandSbdcpositsincludingtheworldfamousgiantSbdepositcalledXikuangshanmineareDevoniancarbonaterock-liosted,Ourjnvcstigationsuggcststhatmanyofthcscdcpositswercmineraljzcdbyorc-bcaringgroundwater.IMajorProoIsofOre-BearingGro