三宫铜镍矿地质—地球物理特征及找矿建议

Geological and Geophysical Characteristics of the Sangong Copper Nickel Deposit and Exploration Suggestions

新疆三宫铜镍矿成矿地质背景优越,康古尔塔格深大断裂以北的重力异常产出部位,是寻找铜镍硫化物矿床有利地段。研究区中部的基性杂岩体中是此次研究的重点对象,根据杂岩体的结构、构造,可以划分出边部岩相和中部岩相,矿体主要赋存在中部岩相,岩性为细粒橄榄辉长岩、中细粒辉长岩。矿体在走向上向上呈向两侧缩小的透镜体、倾向上呈层状产出、深部有膨大的趋势,品位总体相对均匀。C2异常是研究区范围内高磁磁异常区,与基性杂岩体对应、套合较好,整体呈北东向展布,该磁异常可能与中深部金属硫化物富集有关。矿体空间位置与激电测深成果套合较好,对应的视极化率ηs值在2.6%~2.8%之间、视电阻率ρs值在1800Ω.m~3000Ω.m之间。后续找矿应使用激电测深配合钻探验证的探矿手段.

The geological background of the Sangong copper nickel deposit in Xinjiang is superior.The Gravity anomaly area north of the Kanggurtag deep fault is a favorable area for searching for copper nickel sulfide deposits.The basic complex in the middle of the study area is the key object of this study.According to the structure and structure of the complex,the edge lithofacies and the middle lithofacies can be divided.The ore body mainly occurs in the middle lithofacies,and the lithology is fine olivine Gabbro and medium fine Gabbro.The ore body appears as a lens that shrinks towards both sides in an upward direction,appears as a layered formation in an upward direction,and has a tendency to expand in depth.The overall grade is relatively uniform.C2 anomaly is a high magnetic Magnetic anomaly area within the scope of the study area,which corresponds to the basic complex and fits well,and is generally distributed in the northeast direction.The Magnetic anomaly may be related to the enrichment of metal sulfide in the middle and deep parts.The spatial position of the ore body is well matched with the results of induced polarization sounding,and the corresponding apparent polarization rateηS value between 2.6%~2.8%,apparent resistivityρThe s value ranges from 1800Ω.m to 3000Ω.m.Subsequent mineral exploration should use IP sounding combined with drilling verification as a prospecting method.