阐释铜矿内蒙古金巴山铜矿床地质特点及成因初探站
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【摘 要】 金巴山铜矿床主要与北西西向构造有关,研究表明,矿体赋存于次生裂隙、节理、层间结构面等次级构造中,形成走向为北西西向的脉状铜矿床。矿石矿物黄铜矿、黄铁矿主要呈团块状、细脉状、浸染状产出。含矿热液沿前期形成的断裂带向上运移。同时在岩浆侵位时形成巨大热源促使建造水、大气降水形成不断的热液循环,沿变形岩石裂隙发生热液对流,还不断从地层中萃取铜元素成为成矿溶液,最后在低压区沉淀,富集成矿。研究指出,在该矿床北西及南东方向的相邻区域具有一定的找矿前景。
【关键词】 铜矿床 控矿因素 黑鹰山-雅干-金巴山成矿带 西北
Geological Characteristic and the Factor Discussed of Jinbashan Copper Deposit,
Inner Mongolia
Zhang yun
(Ningxia nuclear industry geological exploration institute Yinchuan 750021)
【Abstract】 Jinbashan copper deposit primarily constructed on NWW structural.It is found that the ore-body mainly occur on the sub-structural,such as secondary interstice、roint and inyerlayer-sturctural plane源于:论文www.7ctime.com
.As a result, the copper deposit is an NWW and veined copper ore deposit. The ore-minerals is Chalcopyrite and Pyrite, in cloddy、dissemination or veinlets. Epithermal throw the fractural migrated upward. The ore fluids migration upward along the early formation of the fractural .Formed when the magmatic emplaced enormous epithermal to facilitate the construction of water, the formation of continuous precipitation hydrothermal circulation, rock fractures occur along the deformed hydrothermal convection, but has also become a copper extracted from the formation mineralizing solution, and finally settling in the low pressure area, rich integrated ore. With the studies , the area on the NW and SE of the copper deposit has better prospecting .
【Key words】 copper deposit factor Heiyingshan-yagan-jinbashan Metallogenic belt Northwest
金巴山铜矿床位于黑鹰山铁矿东南部,由3个铜矿带组成(两个产于变质岩中、一个产于花岗岩中),早在1971年就已发现了该铜矿点,对其进行了矿点检查,并提出了在以后工作中给予注意的评价意见。在2010-2013年经物、化探、地质测量、钻探,已初步获得一个小型规模的铜矿床,本文主要对该类型矿床的成矿地质特征及矿床成因进行探讨。
1 成矿地质背景
矿床位于内蒙古西部黑鹰山—雅干华力西造山带-金巴山成矿带东部,金巴山复向斜南翼部位,区域性北西西向断裂(F2)下盘的次级断裂中。矿区内出露地层有中上志留统论文导读:
公婆泉组;下石炭统绿条山组;中石炭统白山组;下白垩统赤金堡组。褶皱及断裂构造均较发育,是矿床的主要控矿因素。岩浆岩为二叠纪中、晚期的中酸性、基性侵入岩。铜矿床则产于绿条山组的黑云母石英片岩、二云母石英片岩、石英岩中,区内除铜矿外,还有磁铁矿、黄铁矿、锰矿等矿产。
2 矿床地质特征
【摘 要】 金巴山铜矿床主要与北西西向构造有关,研究表明,矿体赋存于次生裂隙、节理、层间结构面等次级构造中,形成走向为北西西向的脉状铜矿床。矿石矿物黄铜矿、黄铁矿主要呈团块状、细脉状、浸染状产出。含矿热液沿前期形成的断裂带向上运移。同时在岩浆侵位时形成巨大热源促使建造水、大气降水形成不断的热液循环,沿变形岩石裂隙发生热液对流,还不断从地层中萃取铜元素成为成矿溶液,最后在低压区沉淀,富集成矿。研究指出,在该矿床北西及南东方向的相邻区域具有一定的找矿前景。
【关键词】 铜矿床 控矿因素 黑鹰山-雅干-金巴山成矿带 西北
Geological Characteristic and the Factor Discussed of Jinbashan Copper Deposit,
Inner Mongolia
Zhang yun
(Ningxia nuclear industry geological exploration institute Yinchuan 750021)
【Abstract】 Jinbashan copper deposit primarily constructed on NWW structural.It is found that the ore-body mainly occur on the sub-structural,such as secondary interstice、roint and inyerlayer-sturctural plane源于:论文www.7ctime.com
.As a result, the copper deposit is an NWW and veined copper ore deposit. The ore-minerals is Chalcopyrite and Pyrite, in cloddy、dissemination or veinlets. Epithermal throw the fractural migrated upward. The ore fluids migration upward along the early formation of the fractural .Formed when the magmatic emplaced enormous epithermal to facilitate the construction of water, the formation of continuous precipitation hydrothermal circulation, rock fractures occur along the deformed hydrothermal convection, but has also become a copper extracted from the formation mineralizing solution, and finally settling in the low pressure area, rich integrated ore. With the studies , the area on the NW and SE of the copper deposit has better prospecting .
【Key words】 copper deposit factor Heiyingshan-yagan-jinbashan Metallogenic belt Northwest
金巴山铜矿床位于黑鹰山铁矿东南部,由3个铜矿带组成(两个产于变质岩中、一个产于花岗岩中),早在1971年就已发现了该铜矿点,对其进行了矿点检查,并提出了在以后工作中给予注意的评价意见。在2010-2013年经物、化探、地质测量、钻探,已初步获得一个小型规模的铜矿床,本文主要对该类型矿床的成矿地质特征及矿床成因进行探讨。
1 成矿地质背景
矿床位于内蒙古西部黑鹰山—雅干华力西造山带-金巴山成矿带东部,金巴山复向斜南翼部位,区域性北西西向断裂(F2)下盘的次级断裂中。矿区内出露地层有中上志留统论文导读:
公婆泉组;下石炭统绿条山组;中石炭统白山组;下白垩统赤金堡组。褶皱及断裂构造均较发育,是矿床的主要控矿因素。岩浆岩为二叠纪中、晚期的中酸性、基性侵入岩。铜矿床则产于绿条山组的黑云母石英片岩、二云母石英片岩、石英岩中,区内除铜矿外,还有磁铁矿、黄铁矿、锰矿等矿产。
2 矿床地质特征