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地球学报  2008 

湖南香花岭锡多金属矿床同位素地球化学研究

DOI: 10.3975/cagsb.2008.06.07

Keywords: 同位素,锡多金属,香花岭,湖南

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Abstract:

笔者对湖南香花岭锡多金属矿床成矿期不同的矿物组合进行矿物包裹体温度和硫、铅同位素测定,获得了锡石-硫化物阶段平均-温度为350℃,硫化物阶段平均均-温度为250℃.锡石-硫化物中黄铁矿的δ34为-1.O‰~+5.4‰;闪锌矿的δ34S为+0.8‰-+5.8‰;磁黄铁矿的δ34S为+1.5‰~5.2‰;方铅矿的δ34S为-1.0‰+3.6‰,具有变化范围小,组成稳定的特点.方铅矿的206Pb/204Pb值为17.785~19.341,207Pb/204Pb值为15.416~16.452,208Pb/204Pb值为38.357~42.579.硫同位素指示硫来源于岩浆,铅同位素指示是多来源.

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