铜陵狮子山矿田金的独立与叠加成矿
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摘要
包村、朝山矿床是狮子山矿田已探明的两个独立矽卡岩型金矿。研究表明,两矿床具脉型金矿化特征;矿石中富含铋矿物,且作为主要载金矿物;Au和Bi明显正相关,按金矿的地球化学分类属铋型金矿。通过狮子山矿田中独立金矿与伴生金矿的对比认为,铋型金矿化不仅可形成包村、朝山独立金矿床,还可在早期(层控)矽卡岩型铜、硫矿床(体)基础上叠加成矿。铋型金矿的叠加成矿应是铜陵地区伴生金矿规模大、品位高且变化大的主因。铋型金矿的查定和研究有重要的理论和实际意义。
Baocun deposit and Chaoshan deposit,explored recently in the Shizishan ore field,are skarn gold-only deposits.Studies indicate that the gold in the two gold fields is vain-featured.Bismuth minerals,the main gold-loaded mineral,is rich in the gold ore.There is obviously positive correlation between Bi and Au in the ores,and the gold deposits can be defined as Bi-type gold ones in terms of geochemical classification.The comparisons of the gold-only deposits and associated ones in Shizishan ore field show that the Bi-type gold mineralization not only generate such gold-only deposits as Baocun deposit and Chaoshan deposit,but also form superimposed gold deposits by superimposed mineralizing in the earlier skarn copper and sulfur deposits (or ore bodies).The superimposed Bi-type gold mineralization may account for the fact that auriferous deposits in Tongling area are larger in scale and higher in gold tenor than in other areas.Finding and studying Bi-type gold deposit has meanings in theory and practice.
Baocun deposit and Chaoshan deposit,explored recently in the Shizishan ore field,are skarn gold-only deposits.Studies indicate that the gold in the two gold fields is vain-featured.Bismuth minerals,the main gold-loaded mineral,is rich in the gold ore.There is obviously positive correlation between Bi and Au in the ores,and the gold deposits can be defined as Bi-type gold ones in terms of geochemical classification.The comparisons of the gold-only deposits and associated ones in Shizishan ore field show that the Bi-type gold mineralization not only generate such gold-only deposits as Baocun deposit and Chaoshan deposit,but also form superimposed gold deposits by superimposed mineralizing in the earlier skarn copper and sulfur deposits (or ore bodies).The superimposed Bi-type gold mineralization may account for the fact that auriferous deposits in Tongling area are larger in scale and higher in gold tenor than in other areas.Finding and studying Bi-type gold deposit has meanings in theory and practice.
引文
陈光远.成因矿物学在金矿中的应用.见:全国金矿矿床矿物 成因矿物学会议论文选集.1984.336～358.
安徽省地质矿产局321地质队.安徽铜陵包村金矿床勘探地 质报告.1994.
[1]唐永成,吴言昌,储国正,等.安徽沿江地区铜金多金属矿床地质[M].北京:地质出版社,1998.230～280.
[2]徐兆文,方长泉,陆现彩,等.与朝山金矿有关岩体地质地球化学特征[J].地质与勘探,2004,40(3):42～46.
[3]胡欢,王汝成,陆建军.等.安徽铜陵狮子山矿田矽卡岩金矿床的矿物组合、化学成分及成因意义[J].矿床地质,2001,20(1):86～98.
[4]傅世昶.铜陵朝山金矿床成矿地质特征和成矿预测[J].地质找矿论丛,1999,14(2):69～74.
[5]任云生,刘连登,万相宗,等.狮子山矿田矽卡岩型金矿铋矿物与金矿化关系研究[J].矿物岩石,2004,24(2):41～45.
[6]丁俊华,许文渊,吴厚泽.中国伴生金矿床[M].北京:地质出版社,1996.9～17.
[7]朱文风,黄送.安徽铜陵狮子山铜矿床伴生金的赋存状态[J].桂林工学院学报,1998,18(4):335～338.
[8]俞沧海,袁小明.铜陵天马山硫金矿床地质特征及成因探讨[J].矿产与地质,2002,16(2):74～77.
[9]吴大敏.新桥矿伴生金银赋存状态和分布规律[J].黄金,2002,23(2):16～18.
安徽省地质矿产局321地质队.安徽铜陵包村金矿床勘探地 质报告.1994.
[1]唐永成,吴言昌,储国正,等.安徽沿江地区铜金多金属矿床地质[M].北京:地质出版社,1998.230～280.
[2]徐兆文,方长泉,陆现彩,等.与朝山金矿有关岩体地质地球化学特征[J].地质与勘探,2004,40(3):42～46.
[3]胡欢,王汝成,陆建军.等.安徽铜陵狮子山矿田矽卡岩金矿床的矿物组合、化学成分及成因意义[J].矿床地质,2001,20(1):86～98.
[4]傅世昶.铜陵朝山金矿床成矿地质特征和成矿预测[J].地质找矿论丛,1999,14(2):69～74.
[5]任云生,刘连登,万相宗,等.狮子山矿田矽卡岩型金矿铋矿物与金矿化关系研究[J].矿物岩石,2004,24(2):41～45.
[6]丁俊华,许文渊,吴厚泽.中国伴生金矿床[M].北京:地质出版社,1996.9～17.
[7]朱文风,黄送.安徽铜陵狮子山铜矿床伴生金的赋存状态[J].桂林工学院学报,1998,18(4):335～338.
[8]俞沧海,袁小明.铜陵天马山硫金矿床地质特征及成因探讨[J].矿产与地质,2002,16(2):74～77.
[9]吴大敏.新桥矿伴生金银赋存状态和分布规律[J].黄金,2002,23(2):16～18.
目录
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