中文摘要:洋滨斑岩锡矿的含矿母岩为燕山晚期黄玉花岗斑岩。高的(87Sr/86Sr),和207Pb/204Pb值表明,它主要来源于地壳物质。根据氧,硫,铅和锶同位素数据并结合矿床地质特征,笔者认为,成矿流体由岩浆水和大气降水混合组成,成矿物质主要来源于花岗斑岩,部分可能来源于基底变质岩。
Abstract:The Yangbin porphyry tin deposit of Zhejiang Province is located in the central part of the Southeast Coastal Mesozoic active volcanic belt of China. Tin orebodies mainly occur in topaz granite porphyry with a few sun in surrounding rocks. The topaz granite porphyry has relatively high(87Sr/86Sr); and 207Pb/204Pb ratios, suggesting that it was derived from the crustal materials. 18O values of quartz and cassiterite, lead and sulfur isotope compositions of ores and topaz granite porphyry, and strontium isotope composition of fluorite were determined. These isotopic data, combined with geological characteristics of the deposit, have led the authors to believe that the ore-forming fluid was a mixture of magmatic water and meteoric water, and that the ore-forming materials came mainly from the granite porphyry and partly from the basement metamorphic rocks.
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基金项目:国家自然科学基金资助项目(49070092)
引用文本:
沈渭洲,刘昌实,闽茂中,王学锋,王德滋.1994.浙江洋滨斑岩锡矿的同位素地质研究[J].矿床地质,13(2):186~192.1994.An isotope geologic study of the Yangbin porphyry tin deposit, Zhejiang Province[J].Mineral Deposits13(2):186~192
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