| 梁东,华北,唐魏子,万生楠,梁孝伟,杨志鹏.喀喇昆仑黑山头铜多金属矿地质特征与找矿标志[J].地质找矿论丛,2022,37(2):156-163 |
| 喀喇昆仑黑山头铜多金属矿地质特征与找矿标志 |
| Geological characteristics and prospecting marks of Heishantou Cu-polymetallic deposit in Karakorum area |
| 投稿时间：2021-11-16 |
| DOI：10.6053/j.issn.1001-1412.2022.02.005 |
| 中文关键词: 黑山头铜多金属矿 地质特征 找矿标志 构造热液型 喀喇昆仑 新疆 |
| 英文关键词:Cu-polymetallic deposit geochemical characteristics prospecting mark structural hydrothermal type Karakorum area Xinjiang Autonomous Region |
| 基金项目:中国地质调查局"新疆皮山县麦拉山地区矿产地质调查"(编号:1212011220651)、新疆地质勘查基金"新疆皮山县黑山头铜多金属矿预查"(编号:K17-3-XJ075)、中国冶金地质总局山东局青年科技基金"新疆叶城县叉路口铅锌矿成矿预测研究"(编号:SDYJ-QNKY201803)联合资助。 |
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| 中文摘要: |
| 黑山头铜多金属矿是喀喇昆仑阿克赛钦地区新发现的小型铜多金属矿床。矿床初步地质勘查表明,铜多金属矿体主要赋存于长城系甜水海岩群和志留系温泉沟组粉砂岩中,受NW向断裂控制,共圈定矿体4条,其中Ⅱ-1和Ⅲ-1号等主矿体长100~650 m,厚1.29~4.07 m,呈脉状、透镜体状、似层状,成矿元素为Cu、Au、Pb、Zn、Ag,总体上矿石品位不高,矿化不均匀。矿石矿物主要为孔雀石、铜蓝、黄铜矿、方铅矿、闪锌矿,脉石矿物主要有绢云母,石英、方解石和泥质等。围岩蚀变主要为绢云母化、碳酸盐化、褐铁矿化。根据矿体赋存特征和围岩蚀变特点,推测成矿与热液活动有关,矿床成因为构造热液型。通过矿床地质特征归纳出矿区地球化学、地球物理、地层岩性矿物组合、构造、围岩蚀变等找矿标志,为下一步勘查评价和区域找矿提供参考。 |
| 英文摘要: |
| Heishantou Cu-polymetallic deposit is a newly discovered small deposit in Aksaiqin area of Karakorum mountains. Ore bodies mainly occur in Tianshuihai formation of Chang Cheng Series and siltstone of Silurian Wenquangou formation and are controlled by NW fault. Now four ore bodies are delineated, ore body II-1 and III-1 are main ones, 100-650 m long and 1.29-4.07 m thick occurring as vein, lens and stratiform. Cu, Au, Pb, Zn and Ag are the ore-forming elements. Generally the grade is lower, mineralization uneven. Malachite, covellite, chalcopyrte, galena and sphslerite are the main ore minerals, sericite, quartz, calcite and the argilaceous material gangue minerals. Wall rock alteration includes mainly sericitization, carbonatization and limonitization. According to characteristics of the ore bodies and alteration it is speculated that the mineralization is related to hydrothermal activity and the deposit is genetically a structural hydrothermal type. Based on geological characteristics of the deposit are summed up the geochemical, geophysical, stratigraphic, lithologic, mineral assemblage, structural and wall rock alteration marks for future prospecting in the area. |
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