• 责任者：Gao Yongbao (Key Laboratory of Genesis and Exploration of Magmatic Ore Deposits ; MLR ; Xi’an Center of Geological Survey ; CGS ; Xi’an 710054 ; China) ; Li Wenyuan
• 刊名：Geological Bulletin of China
• 出版年：2013
• 卷期：32(10)
• 关键词：铅锌矿床 ; lead-zinc deposit ; 流体包裹体 ; fluid inclusions ; 青海 ; Qinghai Province
• 页码：p.1631-1642
• 图表：9 illus., 4 tables, 31 refs.
• 分类号：1001
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

     The Hutouya Zn-Pb deposit is located in western Qimantag of East Kunlun Mountains, Qinghai Province. The layered, quasi-lamellar, lenticular and veined ore bodies are controlled by the Langyashan Formation of Jixianian Period. Two stages of miner- alization are recognized based on cross-cutting relationships. The late stage is represented by the galena-bearing calcite veins, which cut the banded ores. Sphalerite is characterized by higher content of Fe family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">（2.255%-5.579%family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">）, lower content of Ga, Ge, and Zn/Cd ratios family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">（146-198family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">）, and the content of Ag in galena is lower family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">（0.015%-0.038%family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">）. These data indicate that the metallic minerals were probablyformed in close relation to magrnatic fluid. family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">δD and family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">δ18OH2O values of fluid inclusion water in calcite vary from -92.7family: 宋体; mso-ascii-font-family: calibri; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">‰to -76‰and -11.58‰ to -2.27‰ respectively, and parts of the values are between the range of magmatic water and atmospheric water. The ore- forming fluid of the early stage was magamtic fluid with components of CO2, CH4, N2 and H2. All these data show that the ore-form- ing fluid was mainly magmatic water at the early stage, with the addition of atmospheric water at the late stage. The ore-forming fluid of the early stage was characterized by middle-lower temperature, high salinity and middle density. At the late stage, the salinity and density of ore-forming fluid decreased because of the continuous mixing with atmospheric water. The values of δ34S vary from 1.6‰ to 9.9‰, which indicate that sulfur in sulfides was mainly from the mixing of magma and wall rocks. The sulfides have 206Pb/204pb ra- tios from 18.533 to 18.580, 207Pb/204Pb ratios from 15.606 to 15.669, and 208pb/204pb ratios from 38.344 to 38.522, which suggest that ore-forming metals might have come from deep magmatic activity, with a little crust mixing. In summary, the Hutouya Zn-Pb de- posit may be a layered skarn type deposit related to Indosinian magrnatic activity.