| 米玛顿珠,侯俊富,巴桑次仁.西藏神公铁铅矿床地质特征与找矿潜力[J].矿产勘查,2018,9(11):2134-2139 |
| 西藏神公铁铅矿床地质特征与找矿潜力 |
| Geological Characteristics and Prospecting Potential of the ShengGong Magnetite-Lead Deposit in Tibet |
| 投稿时间：2018-05-21 |
| DOI： |
| 中文关键词: 西藏 神公铁铅矿床 地质特征 找矿潜力 |
| 英文关键词: Tibet, ShenGong magnetite-lead-zinc deposit (SMD), geological characteristics, prospecting potential |
| 基金项目:中国地调局西藏切穷地区矿产远景调查项目(编号:12120113035500)资助。 |
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| 中文摘要: |
| 神公铁铅矿床位于冈底斯成矿带北亚带Fe-Cu-Pb-Zn成矿带西段,神公杂岩体侵入下二叠统昂杰组(P1a)黑色岩系、上二叠统下拉组(P2x)碳酸盐地层,在其接触带形成含矿矽卡岩和角岩。已圈出Ⅰ、Ⅱ、Ⅲ共3条磁铁铅锌矿体,呈条带状、囊状,矿体长分别为1950 m,600 m,730 m,平均宽分别为34.13 m,12.33 m,47.7 m。矿体南倾或南西倾,倾角60°～65°。矿石矿物以磁铁矿为主,伴生方铅矿、闪锌矿和黄铁矿等。成矿主要与神公杂岩体有关,其年龄200.6～218.7 Ma。矿床成因属矽卡岩型多金属矿床。矿区遥感解译显示为一级铁染异常；化探异常面积约20 km2,为Fe、Pb、Zn、Cu、Au等多元素组合异常；高精磁测在该矿区圈出8个异常；遥感及物、化探异常套合性较好,规模大。已发现矿体均产于遥感、物探及化探异常内,综合分析认为该矿床具有良好的找矿前景。 |
| 英文摘要: |
| The ShenGong magnetite-lead-zinc deposit(SMD) is located in the west of the Fe-Cu-Pb-Zn north sub segment in the Gangdese metallogenic belt. The ShenGong complex intrusion intruded into the black shale seriesin the lower Permian Angjie fomation(P1a) and carbonate rocks in the upper Permian(P2x).In their contact zones, ore-bearing skarn and hornstone wereformed. The No.Ⅰ、Ⅱ、Ⅲ magnetite-lead-zinc orebodies have been found, which dip to south and southwest, with the angel 60°-65°as banding or cystic.The length of each orebody is respectively 1950m,600m,730m, meanwhile the width is 34.13m, 12.33m, 47.7m.The ores of the SMD mainly is magnetite, associated with galenite, sphalerite, pyrite, and so on. The mineralization is mainly related to the complex intrusion, which diagenetic age is 200-218.7Ma. The genesis of the SMD belongs to the type of the skarn-type polymetallic deposit. In ShenGong area, the first grade iron stain anomaly was revealed by remote sensing interpretation.The geochemical anomalies,which are Fe,Pb,Zn,Cu,Au multiple elements combination anomaly, covers about 20 square kilometersand 8 magnetic anomalies have been delineated by high precision magnetic survey. All kinds of anomalies set better, and are large in scale, in which orebodies were found. The comprehensive analysis showedthat the deposit has a good prospecting potential. |
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