新疆卡拉塔格红海VMS型矿床矿石空间变化特征及分带性
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摘要
红海VMS型矿床位于卡拉塔格古生界火山隆起区西南边缘的斜坡地带。矿体产于海相火山碎屑岩层中,受多组断裂构造控制,具有典型的上部块状铜锌矿体,下部网脉状铜矿体的二元结构特征,成矿元素具有明显的空间分带特征。从块状矿体到矿体上盘呈块含铜黄铁矿矿石→黄铜矿石→铜锌矿石的变化规律,矿物组合变化规律为:黄铁矿+黄铜矿→黄铜矿±黝铜矿→黄铜矿+闪锌矿±黝铜矿±方铅矿±黄铁矿。从块状矿体核部向边部,矿石中Cu的含量呈递减趋势,Zn的含量与Cu的含量成负相关关系;网脉状矿体Cu含量变化不大。块状矿体的Cu品位大于网脉状矿体。
The Honghai VMS deposit is hosted on the slope at thesouthwest edge of the Paleozoicvolcanicuplift zonein the Kalat-age,Xinjiang. The orebodies occur in the marine volcanoclastic rocks,which is controlled by many faults and has typical characteristicsof dual-structure asthe upper is massive Cu-Zn ore-body and the bottom is vein Cu ore-body.The metallogenic element S has obviousspatial distribution characteristics. From the massive ore-body to the upper wall of ore-body,the oresvarylike chalcopyrite-pyrite→chalcopyrite→chalcopyrite-sphalerite,the mineral assemblagevary in the pattern like chalcopyrite+pyrite →chalcopyrite ± tetrahedrite→chalcopyrite+ sphalerite ± tetrahedrite ± galena ± pyrite. From the inner to outer of the massive ore-body,the grade of Cu decrea-ses,the relationship between the grade of Cu and Znis negative,the variation of the grade of Cu in the vein ore is not obvious and thegrade of Cu in the massive ore is higher than that it in the vein ore.
The Honghai VMS deposit is hosted on the slope at thesouthwest edge of the Paleozoicvolcanicuplift zonein the Kalat-age,Xinjiang. The orebodies occur in the marine volcanoclastic rocks,which is controlled by many faults and has typical characteristicsof dual-structure asthe upper is massive Cu-Zn ore-body and the bottom is vein Cu ore-body.The metallogenic element S has obviousspatial distribution characteristics. From the massive ore-body to the upper wall of ore-body,the oresvarylike chalcopyrite-pyrite→chalcopyrite→chalcopyrite-sphalerite,the mineral assemblagevary in the pattern like chalcopyrite+pyrite →chalcopyrite ± tetrahedrite→chalcopyrite+ sphalerite ± tetrahedrite ± galena ± pyrite. From the inner to outer of the massive ore-body,the grade of Cu decrea-ses,the relationship between the grade of Cu and Znis negative,the variation of the grade of Cu in the vein ore is not obvious and thegrade of Cu in the massive ore is higher than that it in the vein ore.
引文
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许英霞,秦克章,徐兴旺,等.东天山卡拉塔格成矿带红山铜-金矿床S同位素特征及成矿潜力研究[J].西北地质,2010,43(4):279-287.
杨合群,李文渊,赵东宏,等.北祁连山石居里沟富铜矿床成矿特征[J].地质与勘探,2000,36(6):20-31.
张连昌,秦克章,英基丰.东天山土屋-延东斑岩铜矿带埃达克质岩及其成矿作用的关系[J].岩石学报,2004,20(2):243-252.
Large RR.1992.Australian volcanic-hosted massive sulphide deposits:features,styles,and genetic models.Economic Geology,87:549-572.
陈卫,方同辉,刘涛,等.新疆卡拉塔格铜锌多金属矿床地球物理模型研究[J].矿产勘查,2011,2(6):749-763.
方同辉,秦克章,王书来,等.浅析卡拉塔格铜金矿成矿地质背景[J].矿床地质,2002,21(增刊):380-384.
付明禄,许强奋,曾阳,等.哈密黄土坡铜锌矿地质特征及找矿方法探讨[J].新疆地质,2010,28(3):260-267.
高珍权,方维萱,胡瑞忠,等.新疆东天山卡拉塔格斑岩型铜(金)矿成矿地质背景与找矿评价[J].地质学报,2006,80(1):90-100.
康吉昌.可可塔勒铅锌矿床地质特征及其成因初探[J].矿产与地质,2001,15(2):89-93.
李文铅,王冉,王核,等.吐哈“天窗”卡拉塔格岩体的地球化学和岩石成因[J].中国地质,2006,33(3):559-565.
李文渊,夏林圻,夏祖春,等.北祁连山早古生代弧后盆地火山作用及成矿特点-以肃南石居里沟富铜块状硫化物矿床为例[J].地质论评,1999,45(增刊):1047-1053.
毛启贵,方同辉,王京彬,等.东天山卡拉塔格早古生代红海块状硫化物矿床精确定年及其地质意义[J].岩石学报,2010,26(10):3017-3026.
缪宇,秦克章,许英霞,等.东疆卡拉塔格梅岭铜(金)矿床地质和流体包裹体特征及其与紫金山式铜金矿床的对比[J].矿床地质,2007,26(1):79-88.
秦克章,方同辉,王书来,等.吐哈盆地南缘古生代“天窗”卡拉塔格铜金矿化区的发现及其成矿潜力[J].中国地质,2001,28(3):16-23.
秦克章,王京彬,张进红,等.阿尔泰山南缘可可塔勒大型铅锌矿床的成矿条件分析[J].有色金属矿产与勘查,1998,7(2):65-74.
冉丽,刘正桃,杨自安,等.新疆东部卡拉塔格地区构造影像特征分析[J].地质与勘探,2010,46(6):1100-1105.
孙岳,王功文,方同辉,等.新疆红海块状硫化物矿床三维地质建模及勘探应用[J].地质与勘探,2013,49(1):179-184.
唐俊华,顾连兴,郑远川,等.东天山卡拉塔格钠质火山岩岩石学、地球化学及成因[J].岩石学报,2006,22(5):1150-1166.
王书来,郭正林,王玉往,等.新疆阿尔泰山南缘产于泥盆纪火山-沉积盆地铅锌矿床地质特征-以可可塔勒铅锌矿为例[J].地质与勘探,2005,41(6):27-33.
许英霞,秦克章,徐兴旺,等.东天山卡拉塔格成矿带红山铜-金矿床S同位素特征及成矿潜力研究[J].西北地质,2010,43(4):279-287.
杨合群,李文渊,赵东宏,等.北祁连山石居里沟富铜矿床成矿特征[J].地质与勘探,2000,36(6):20-31.
张连昌,秦克章,英基丰.东天山土屋-延东斑岩铜矿带埃达克质岩及其成矿作用的关系[J].岩石学报,2004,20(2):243-252.