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| 基金项目：新疆地质找矿项目“新疆西昆仑岔路口地区铜镍钨锡银找矿方向研究与靶区优选”（XGMB202040） |
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| 摘要： |
| 新疆阿图什苏洪东碱性花岗岩为西南天山哈拉峻巴什索贡杂岩体（辉长岩、霓石正长岩、碱性花岗岩）组成部分，处于塔里木板块北缘—南天山造山带中碱性杂岩带三大集中区（库尔勒、拜城、哈拉峻）西段。自1961年在杂岩体中发现稀土、铌钽矿化线索以来，虽持续对其进行找矿调查研究，但进展均不明显。近年来，通过预研究、野外查证、样品测试等研究工作，发现苏洪东碱性花岗岩为区内铌钽控矿岩体，（Na,Ta）2O5品位最高为0.106%，Ta2O5品位最高为0.010%；首次在碱性花岗岩边缘地带发现铌钽富矿脉，（Na,Ta）2O5品位为0.278%，Ta2O5品位为0.044%。研究认为苏洪东碱性花岗岩与拜城波孜果尔铌钽矿床控矿岩体特征相似，具有重要的找矿和研究意义，推进了西南天山碱性花岗岩型稀有金属及稀土找矿突破。 |
| 关键词：碱性花岗岩 铌钽矿 新疆 苏洪东 |
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| Abstract: |
| The Suhongdong alkaline granite in Artux, Xinjiang is one of the components of the Halajun Bashisuogong complex (gabbro, aegirine syenite and alkaline granite) in the southwest Tianshan Mountains. It is located in the western section of the 3 major concentration areas of the alkaline complex belt (Korla, Baicheng and Halajun) in the northern margin of the Tarim plate and the southern Tianshan orogenic belt. Since the discovery of rare earth, niobium-tantalum mineralization clues in the complex in 1961, people have been prospecting or investigating the complex, but the achievements have not been obvious. In recent years, by means of preliminary research, field verification, sample testing and laboratory research, it is found that the alkaline granite of Suhongdong is the Nb-Ta ore-controlling rock in this area, with the highest (Nb,Ta)2O5 grade of 0.106% and Ta2O5 grade of 0.010%. The Nb-Ta-enriched vein with grade of 0.278% (Nb,Ta)2O5 and 0.044% Ta2O5 was found in the margin of alkaline granite for the first time. It is concluded that the characteristics of Suhongdong alkaline granite are similar to the ore-controlling rock mass of Baicheng Boziguo′er Nb-Ta deposit, which is of great significance for prospecting and research. This paper attempts to promote the breakthrough of alkaline granite type rare metal and rare earth prospecting in southwest Tianshan. |
| Keywords:alkaline granite Nb-Ta deposit Suhongdong in Xinjiang |
| 余元军，万建领，闫佐，等.新疆阿图什苏洪东碱性花岗岩型铌钽富矿脉的发现及意义[J].地质学刊,2021,45(3):225-229 |
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