新疆哈密市XX铜矿特征分析

Analysis of Characteristics of XX Copper Mine in Hami, Xinjiang

摘要: 新疆哈密市XX铜矿(点)位于为准噶尔古板块与塔里木板块之间的博格达–哈尔里克晚古生代裂谷–岛弧褶皱带，对其开展详细的野外地质工作，查明了研究区地层、构造、岩浆岩，矿化带的规模、产状、形态、含矿性及其变化规律。认为矿化主要发育在玄武岩、凝灰岩裂隙中，由断续多点产出的矿化点组成。围岩蚀变主要发育有硅化、绿泥石化、绿帘石化、方解石化等，矿石中金属矿物有黄铜矿、孔雀石、铜蓝、褐铁矿、黄铁矿；脉石矿物以方解石、石英为主，次为绿泥石等。矿石结构主要有：交代假象结构、交代残余结构、交代结构、变晶结构；矿石构造主要有：星点状构造、浸染状构造、脉状构造、条带状构造、块状构造、角砾状构造。成因类型为岩浆热液。同时对其控矿因素和找矿标志进行了简单分析。

Abstract: The XX copper deposit (point) in Hami, Xinjiang, is located in the Bogda-Haarike rift-island arc fold belt between the Junggar-Tarim plate and the Tarim plate. We carried out detailed field geology work, and identified the strata, tectonics, magmatic rocks, mineralized belt size, occurrence, shape, mineralization and its variation in the study area. It is believed that mineralization is mainly developed in the fissures between basalt and tuff, and is composed of discontinuous and multi-point mineralization. The main alteration of wall rocks is silicification, chlorite, epidote, calcite, etc. The ore minerals include chalcopyrite, malachite, copper blue, limonite, pyrite and gangue minerals with calcite, Quartz-based, followed by chlorite and so on. The main ore textures are metasomatic pseudomorph texture, metasomatic residual texture, metasomatic texture, the crystal structure; ore structures are star point structure, disseminated structure, vein structure, banded structure, block structure, brecciated structure. The genetic type is magmatic hydrothermal. At the same time, the ore controlling factors and prospecting criteria are analyzed.