松湖铁矿地球化学特征及成矿模式讨论
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摘要
据松湖铁矿勘探资料及地球化学数据、同位素测年数据,探讨松湖铁矿床地球化学特征及成矿模式。松湖铁矿微量元素表现出Nb,Ta,P,Ti亏损,具陆缘火山岛弧地球化学特点。矿体与围岩稀土元素分布模式相似,表明矿体与围岩物质来源具相关性。成矿物质来源于洋壳部分熔融及地幔,矿体顶、底板凝灰岩LA-ICP-MS锆石U-Pb年龄分别为(332±1)Ma和(316.04±0.82)Ma,认为松湖铁矿属与火山作用有关的岩浆-热液复合型矿床。
On the basis of the latest exploration data,the geochemical data and isotopic dating data, discussed geochemical characteristic and metallogenic model of Shong Hu iron mine.The trace element of Songhu iron mine was depleted in Nb, Ta, P, Ti and it has the characteristics of geochemical of epicontinental volcanic island.Rare earth element analysis shows that the distribution pattern of orebody was similar with surrounding rocks,only had difference in total REE,it shows that the material source of orebody had correlation with surrounding rocks.It is considered that the metallogenic matarials originated from partial melting of oceanic crust and mantle.LA-ICP-MS zircon U-Pb age of roof is(332±1) Ma,the floor is(316.04±0.82) Ma.The conclusion indicated that Songhu iron mine belongs to magmatic-hydrothermal composite deposit which is related to volcanism.
On the basis of the latest exploration data,the geochemical data and isotopic dating data, discussed geochemical characteristic and metallogenic model of Shong Hu iron mine.The trace element of Songhu iron mine was depleted in Nb, Ta, P, Ti and it has the characteristics of geochemical of epicontinental volcanic island.Rare earth element analysis shows that the distribution pattern of orebody was similar with surrounding rocks,only had difference in total REE,it shows that the material source of orebody had correlation with surrounding rocks.It is considered that the metallogenic matarials originated from partial melting of oceanic crust and mantle.LA-ICP-MS zircon U-Pb age of roof is(332±1) Ma,the floor is(316.04±0.82) Ma.The conclusion indicated that Songhu iron mine belongs to magmatic-hydrothermal composite deposit which is related to volcanism.
引文
[1]朱永峰,周晶,郭璇.西天山石炭纪火山岩岩石学及Sr-Nd同位素地球化学研究[J].岩石学报,2006,22(5):1341-1350
[2]王春龙.新疆西天山松湖铁矿床地质地球化学特征与成因研究[D].中国地质科学院,2012.
[3]单强,张兵,罗勇,等.新疆尼勒克县松湖铁矿床黄铁矿的特征和微量元素地球化学[J].岩石学报,2009,6:1456-1464.
[4]邹伶俐,任毅,田德广.新疆尼勒克县松湖铁矿矿石组合特征[J].西部探矿工程,2011,6:114-115
[5]刘学良.新疆西天山阿吾拉勒成矿带松湖铁矿成矿规律及找矿方向研究[D].新疆大学,2013.
[6]张作衡,洪为,蒋宗胜,等.新疆西天山晚古生代铁矿的地质特征、矿化类型及形成环境[J].矿床地质,2011,31(5):941-964.
[7]Hugh R.Rollison,杨学明,陈双喜.岩石地球化学[M].北京:中国科学技术大学出版社.2000,87-91.
[8]周久龙,罗照华,潘颖,等.岩浆型铁矿中脉状铁矿体的成因:以承德黑山铁矿为例[J].岩石学报,2013,29(10):3555-3566.
[9]Wood D.A.,Joron J.L,Treuil M.,A re-appraisal of the use of trace elements to classify and discriminate between magma series erupted in deferent tectonic settings[J].Earth Planet Sci.Lett.,1979,45:326-336.
[10]Boynton W.V.,Geochemistry of the rare earth elements:meteorite studies[J].Rare earth element geochemistry.1984,63-114
[11]冯金星,石福品,汪帮耀,等.新疆西天山阿吾拉勒成矿带火山岩型铁矿[M].北京:地质出版社.2010,46-47.
[12]蒋宗胜,张作衡,侯可军,等.西天山查岗诺尔和智博铁矿区火山岩地球化学特征、锆石U-Pb年龄及地质意义[J].岩石学报,2012,7:2074-2088.
[13]王军年,白新兰,李岩龙,等.新疆尼勒克县松湖铁矿地质特征[J].资源环境与工程,2009,23(2):104-107.
[14]陈曹军.新疆塔什库尔干地区铁矿床成矿规律及找矿方向研究[D].中国地质大学,2012.
[15]朱志新,董连慧,王克倬,等.西天山造山带构造单元划分与构造演化[J].地质通报,2013,32(2/3):297-306.
?新疆地矿局第七地质大队.新疆尼勒克县松湖铁矿详查报告,2008
[2]王春龙.新疆西天山松湖铁矿床地质地球化学特征与成因研究[D].中国地质科学院,2012.
[3]单强,张兵,罗勇,等.新疆尼勒克县松湖铁矿床黄铁矿的特征和微量元素地球化学[J].岩石学报,2009,6:1456-1464.
[4]邹伶俐,任毅,田德广.新疆尼勒克县松湖铁矿矿石组合特征[J].西部探矿工程,2011,6:114-115
[5]刘学良.新疆西天山阿吾拉勒成矿带松湖铁矿成矿规律及找矿方向研究[D].新疆大学,2013.
[6]张作衡,洪为,蒋宗胜,等.新疆西天山晚古生代铁矿的地质特征、矿化类型及形成环境[J].矿床地质,2011,31(5):941-964.
[7]Hugh R.Rollison,杨学明,陈双喜.岩石地球化学[M].北京:中国科学技术大学出版社.2000,87-91.
[8]周久龙,罗照华,潘颖,等.岩浆型铁矿中脉状铁矿体的成因:以承德黑山铁矿为例[J].岩石学报,2013,29(10):3555-3566.
[9]Wood D.A.,Joron J.L,Treuil M.,A re-appraisal of the use of trace elements to classify and discriminate between magma series erupted in deferent tectonic settings[J].Earth Planet Sci.Lett.,1979,45:326-336.
[10]Boynton W.V.,Geochemistry of the rare earth elements:meteorite studies[J].Rare earth element geochemistry.1984,63-114
[11]冯金星,石福品,汪帮耀,等.新疆西天山阿吾拉勒成矿带火山岩型铁矿[M].北京:地质出版社.2010,46-47.
[12]蒋宗胜,张作衡,侯可军,等.西天山查岗诺尔和智博铁矿区火山岩地球化学特征、锆石U-Pb年龄及地质意义[J].岩石学报,2012,7:2074-2088.
[13]王军年,白新兰,李岩龙,等.新疆尼勒克县松湖铁矿地质特征[J].资源环境与工程,2009,23(2):104-107.
[14]陈曹军.新疆塔什库尔干地区铁矿床成矿规律及找矿方向研究[D].中国地质大学,2012.
[15]朱志新,董连慧,王克倬,等.西天山造山带构造单元划分与构造演化[J].地质通报,2013,32(2/3):297-306.
?新疆地矿局第七地质大队.新疆尼勒克县松湖铁矿详查报告,2008