Two kinds of Carlin-type gold deposits in southwestern Guizhou, China

Based on the organic geochemical studies on two typical Carlin-type deposit s in southwestern Gulzhou, as well as the comparison between the two deposi ts in terms of geological background, igneous rock, paleo-oilfield, lithofa cies and paleogeographical and geochemical features, two kinds of Carlin-ty pe deposit were proposed: Lannigou Type and Getang Type. The former include s Lannigou, Banqi and Yata gold deposits. These deposits are hosted by turb idite, geographically situated in the southwest of the mineralized district , and related genetically to paleo-oilfields. The latter includes Getang, Z imudang and Dachang gold (mercury and thallium) deposits, situated geograph ically in the northwest of the mineralized district where Emishan basalt co mmonly occurs. These deposits are associated with reduction of coaly organi c matter.