(1. 中南大學 有色金屬成礦預測與地質(zhì)環(huán)境監(jiān)測教育部重點實驗室 地球科學與信息物理學院，長沙 410083；
2. Department of Earth Sciences, University of Western Ontario, London, Ontario N6A5B7, Canada；
3. 有色金屬礦產(chǎn)地質(zhì)調(diào)查中心 新疆地質(zhì)調(diào)查所，烏魯木齊830000)
摘 要: 鐵克里克銅鉛鋅多金屬礦床位于中亞殼體塔里木地洼區(qū)，歷經(jīng)多期大地構造成礦階段，是西昆侖地區(qū)庫斯拉普成礦帶上重要的銅鉛鋅礦床。在分析該礦床成礦地質(zhì)條件的基礎上，研究礦區(qū)流體包裹體以及硫、鉛同位素組成特征，探討成礦流體特征及成礦物質(zhì)來源。礦區(qū)礦石硫樣品δ34(SCDT)值分布較寬(+8.2×10-3~-7.6×10-3)，包裹體均一溫度介于103~284 ℃，鹽度介于0.18%~24.47%(NaCl)，表明流體來源不是單一的，存在至少兩種流體的混合。對各類型礦石鉛同位素示蹤研究表明:研究區(qū)礦石鉛主要為殼幔混合的俯沖鉛，主要成礦物質(zhì)來源于賦礦圍巖和下伏基底。研究認為，鐵克里克礦床表現(xiàn)出多大地構造成礦階段、多物質(zhì)來源、多成礦作用等特點，為較典型的同生沉積-后期熱液改造型多因復成礦床。
關鍵字: 流體包裹體；硫鉛同位素；多因復成礦床；鐵克里克
（1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education,
School of Geoscience and Info-physics, Central South University, Changsha 410083, China;
2. Department of Earth Sciences, University of Western Ontario, London, Ontario N6A5B7, Canada;
3. Xinjiang Institute of Geological Survey, China Non-Ferrous Metals Resource Geological Survey,
Urumqi 830000, China）
Abstract:The Tiekelike copper-lead-zinc polymetallic deposit is located in Tarim Diwa region, Central Asian Crustobody. It has experienced several continental tectonic and metallogenic stages, and belongs to the significant copper-lead-zinc deposit in the Kusilapu mineralizing belt of West Kunlun. Based on analysis of the geologic settings of Tiekelike deposits, the fluid inclusions were systematically researched, the features of sulfur and lead isotopes were studied, and the characteristics of mineralization fluids and the sources of minerals were discussed. The results show that the δ34(SCDT) values of ore minerals distribute widely (from +8.28×10-3 to -7.6×10-3). The homogenization temperatures of the fluid inclusions vary from 103 ℃ to 284 ℃. The salinities range from 0.18% to 24.47% (mass fraction, NaClequiv). The features of fluid inclusions and sulfur isotopes indicate that the ore-forming fluids has several sources. According to the lead isotope tracer analysis, the conclusion is draw that the lead is mostly subducting lead mixed by crustal and mantle material, the major mineralizing material comes from ore-bearing host rocks and the underlain basement. The Tiekelike copper-lead-zinc polymetallic deposit is a typical syndepositional -hydrothermal transforming complex deposit, which is characterized by the multiple mineralizing continental structural stages, the multiple ore-forming material and the multiple mineralizations.
Key words: fluid inclusions; sulfur and lead isotope; polygenetic compound deposit; Tiekelike
