| 长坑金银矿床的铅,锶,硫同位素特征与矿化模式 |
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| 关键词:isotopes of lead and sulfur anomalous lead of multi-stage fluid mixing gold silver deposit Changkeng |
| 基金项目:中国科学院黄金办科研基金,中科院博士点基金 |
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| Characteristics of Lead, Strontium and Sulfur Isotopes and Mineralization Model of Changkeng Gold Silver Deposit, China |
| The isotopic composition of lead of gold ore is somewhat different from silver ore in Changkeng deposit, i.e., the variation of 206 Pb/ 204 Pb of gold ore is vider while silver ore enrichs 207 Pb and 208 Pb relatively. The lead of gold ore belongs to anomalous lead derived from mixing of common lead with radiogenic lead, and the lead of silver ore probably represents mixture of lead isotopes having undergone three stage evolution. The lead isotope, as well as strontium isotope of calcite, is of crust origin, The δ 34 S values of gold ore are scattered with negative average, while silver ore relatively gathered with positive average. Based on the correlation betwween sulfur and lead isotopic compositions and the zoning of gold and silver ores, a mineralization model for mixing process of fluids with different lead isotopic compositions and oxidizing potentials is presented for Changkeng deposit in this paper. |
| ZHANG Sheng,LI Tong-jin,WANG Lian-kui.1997.Characteristics of Lead, Strontium and Sulfur Isotopes and Mineralization Model of Changkeng Gold Silver Deposit, China[J].Acta Geoscientica Sinica,18(1):53-60. |
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