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The Habo alkaline intrusion, which is located in the south of the Sanjiang area, Yunnan Province, China, is a typical Cenozoic alkaline intrusion. There are a series of small to medium-sized Au and Pb–(Zn) deposits around this intrusion. Those deposits are spatially associated with the Habo alkaline intrusion.(1) The d~(34) S values of sulfides from Au deposits range from-1.91 % to 2.69 %, which are similar to those of Pb–(Zn) deposits(-3.82 % to-0.05 %) and both indicate a much greater contribution from magma.(2) The Habo alkaline intrusion has relatively homogeneous Pb isotopic compositions with~(206)Pb/~(204) Pb ranging from 18.608 to 18.761,~(207)Pb/~(204) Pb from 15.572 to15.722 and~(208)Pb/~(204) Pb from 38.599 to 39.110. These Pb isotope ratios are similar to those of Au deposits, whose~(206)Pb/~(204) Pb range from 18.564 to 18.734,~(207)Pb/~(204) Pb from15.582 to 15.738 and~(208)Pb/~(204) Pb from 38.592 to 39.319.Pb ratios in both the intrusion and Au deposits suggest that Pb mainly derived from the depth, probably represents a mixture of mantle and crust. Pb–(Zn) deposits, however,show a decentralized trait, and most of them are similar to that of the alkaline intrusion with~(206)Pb/~(204) Pb ranging from18.523 to 18.648,~(207)Pb/~(204) Pb from 15.599 to 15.802, and~(208)Pb/~(204) Pb from 38.659 to 39.206.(3) In the plumbotectonic diagram~(207)Pb/~(204) Pb versus~(206)Pb/~(204) Pb, almost all of Au and Pb–(Zn) deposits have the same projection area with the Habo alkaline intrusion, which indicates that thosedeposits almost share the same source with the alkaline intrusion.(4) Isotopic age of the Habo alkaline intrusion is36–33 Ma, which is similar to that of Beiya, whose orerelated alkaline porphyries age is 38–31 Ma and molybdenite Re–Os age is 36.9 Ma. Therefore, along with S–Pb isotope traits, we suggest that the Habo Au and Pb–(Zn)deposits should be typically Ailaoshan-Red River Cenozoicalkaline-related deposits and ore-forming ages of these deposits should be later than that of the Habo alkaline intrusion.
The Habo alkaline intrusion, which is located in the south of the Sanjiang area, Yunnan Province, China, is a typical Cenozoic alkaline intrusion. There are a series of small to medium-sized Au and Pb- (Zn) deposits around this intrusion. Those deposits are spatially associated with the Habo alkaline intrusion. (1) The d ~ (34) S values of sulfides from Au deposits range from-1.91% to 2.69%, which are similar to those of Pb- (Zn) deposits (2) The Habo alkaline intrusion has relatively homogeneous Pb isotopic compositions with ~ (206) Pb / ~ (204) Pb ranging from 18.608 to 18.761, ~ ( 207 Pb / 204 Pb from 15.572 to 15.722 and 208 Pb / 204 Pb from 38.599 to 39.110. These Pb isotope ratios are similar to those of Au deposits, whose ~ 206 Pb / The Pb range from 18.564 to 18.734 and the Pb to 204 Pb from 15.582 to 15.738 and 208 Pb to 204 Pb from 38.592 to 39.319, and Au deposits suggest that Pb mainly derived from the depth, probably represents a mixture of mantle and crust. Pb- (Zn) deposits, however, show a decentralized trait, and most of them are similar to that of the alkaline intrusion with ~ (206) Pb / ~ (204) Pb ranging from 18.523 to 18.648, (207) Pb / ~ (204) Pb from 15.599 to 15.802, and ~ 208 Pb / ~ (204) Pb from 38.659 to 39.206. (3) In the plumbotectonic (207) Pb / ~ (204) Pb versus ~ (206) Pb / ~ (204) Pb, almost all of Au and Pb- (Zn) deposits have the same projection area with the Habo alkaline intrusion, which indicates that thosedeposits almost share the same source with the alkaline intrusion. (4) Isotopic age of the Habo alkaline intrusion is 36-33 Ma, which is similar to that of Beiya, whose orerelated alkaline porphyries age is 38-31 Ma and molybdenite Re-Os age is 36.9 Ma. Along with S-Pb isotope traits, we suggest that the Habo Au and Pb- (Zn) deposits should be typically Ailaoshan-Red River Cenozoic alkaline-related deposits and ore-forming ages of these deposits should be later than that of the Habo alkaline intrusion.