| 河北洞子沟银(铜金)矿床成矿地质特征及成因探讨 |
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| 引用本文： | 胡祥昭,彭恩生,朱余德,高光明,孙振家.河北洞子沟银(铜金)矿床成矿地质特征及成因探讨[J].大地构造与成矿学,1999,23(2):152-159. |
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| 作者姓名： | 胡祥昭 彭恩生 朱余德 高光明 孙振家 |
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| 作者单位： | 中国工业大学地质系,长沙,410083 |
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| 摘 要： | 论述了洞子沟银（铜、金）矿床成矿地质背景和地质特征，成矿地质时代及矿床成因，并从硫同位素、氢氧同位素及包体成分、稀土元素等探讨了成矿物质来源，矿床硫同位素变化范围窄，δ３４Ｓ＝（－０．４９～＋２．８）×１０－３，硫同位素组成以重硫型为主，接近陨石硫同位素组成。δ１８ＯＨ２Ｏ＝１２．９×１０－３，δＤＨ２Ｏ＝－７３×１０－３流体包裹体成分反映出成矿热液以岩浆来源为主，并混合了部分大气降水及雨水。提出本矿床是地洼区内的多因复成矿床。
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| 关 键 词： | 银矿床 矿床成因 多因复成 洞子沟 |
GEOLOGICAL CHARACTERISTICS AND GENESIS OF THE DONGZIGOU SILVER (COPPER, GOLD) DEPOSIT |
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| HU Xiangzhao,PENG Ensheng,ZHU Yude,GAO Guangming,SUN Zhenjia.GEOLOGICAL CHARACTERISTICS AND GENESIS OF THE DONGZIGOU SILVER (COPPER, GOLD) DEPOSIT[J].Geotectonica et Metallogenia,1999,23(2):152-159. |
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| Authors: | HU Xiangzhao PENG Ensheng ZHU Yude GAO Guangming SUN Zhenjia |
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| Abstract: | The minerogenetic background and geological characteristics of the Dongzigou silver (copper, gold) deposit are reported. Minerogenetic epoch and genetic types of the ore deposit are discussed. Sources of minerogenetic material are analysed with respect to sulfur and hydrogen oxygen isotopes and fluid inclusion composition. Range of the sulphur isotope δ 34 S‰ is narrow (δ 34 S=-4.9×10 -3 ～2.8×10 -3 ) and is close to aerolitesulphur composition. δ 18 O H 2O =(+3.66～+12.9)×10 -3 , δD H 2O =(-3.2～-73)×10 -3 . It is suggested that this deposit is a polygenetic compound ore deposit in a diwa region. |
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| Keywords: | Silver deposit ore deposit genesis polygenetic compound deposit Dongzigou |
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