矿产与地质
礦產與地質
광산여지질
MINERAL RESOURCES AND GEOLOGY
2012年
6期
516-520
,共5页
铅锌矿%同位素%成矿物质来源
鉛鋅礦%同位素%成礦物質來源
연자광%동위소%성광물질래원
对新疆霍什布拉克铅锌矿床硫化物硫、铅同位素测定,获得成矿早期黄铁矿的δ34S值为-12.1‰～-8.5‰,闪锌矿的δ34S值为-17.6‰,方铅矿的δ34S值为-18.8‰;晚期黄铁矿的δ34S值为+12.8‰～+22.2‰,闪锌矿的δ34S值为+20.0‰～+24.2‰,方铅矿的δ34S值为+14.4‰+22.2‰.成矿从早到晚,硫同位素由大的负值变化到大的正值,方铅矿的206 Pb/204 Pb比值为17.900-18.086,207Pb/204Pb比值为15.586-15.732,208Pb/204Pb比值为37.997-38.381;黄铁矿的206Pb/204Pb比值为17.950,207 pb/204Pb比值为15.633,208 pb/204 Pb比值为38.144.灰岩的206pb/204 Pb比值为18.156-18.875,207Pb/204Pb比值为15.396-15.855,208Pb/204Pb比值为37.631-38.967.硫同位素指示硫来源于海水硫酸盐还原硫.铅同位素指示至少有两上以上来源.
對新疆霍什佈拉剋鉛鋅礦床硫化物硫、鉛同位素測定,穫得成礦早期黃鐵礦的δ34S值為-12.1‰～-8.5‰,閃鋅礦的δ34S值為-17.6‰,方鉛礦的δ34S值為-18.8‰;晚期黃鐵礦的δ34S值為+12.8‰～+22.2‰,閃鋅礦的δ34S值為+20.0‰～+24.2‰,方鉛礦的δ34S值為+14.4‰+22.2‰.成礦從早到晚,硫同位素由大的負值變化到大的正值,方鉛礦的206 Pb/204 Pb比值為17.900-18.086,207Pb/204Pb比值為15.586-15.732,208Pb/204Pb比值為37.997-38.381;黃鐵礦的206Pb/204Pb比值為17.950,207 pb/204Pb比值為15.633,208 pb/204 Pb比值為38.144.灰巖的206pb/204 Pb比值為18.156-18.875,207Pb/204Pb比值為15.396-15.855,208Pb/204Pb比值為37.631-38.967.硫同位素指示硫來源于海水硫痠鹽還原硫.鉛同位素指示至少有兩上以上來源.
대신강곽십포랍극연자광상류화물류、연동위소측정,획득성광조기황철광적δ34S치위-12.1‰～-8.5‰,섬자광적δ34S치위-17.6‰,방연광적δ34S치위-18.8‰;만기황철광적δ34S치위+12.8‰～+22.2‰,섬자광적δ34S치위+20.0‰～+24.2‰,방연광적δ34S치위+14.4‰+22.2‰.성광종조도만,류동위소유대적부치변화도대적정치,방연광적206 Pb/204 Pb비치위17.900-18.086,207Pb/204Pb비치위15.586-15.732,208Pb/204Pb비치위37.997-38.381;황철광적206Pb/204Pb비치위17.950,207 pb/204Pb비치위15.633,208 pb/204 Pb비치위38.144.회암적206pb/204 Pb비치위18.156-18.875,207Pb/204Pb비치위15.396-15.855,208Pb/204Pb비치위37.631-38.967.류동위소지시류래원우해수류산염환원류.연동위소지시지소유량상이상래원.
