Liuju copper deposit is the typical sandstone-type copper deposit that is located in Chuxiong Basin of Central Yunnan Province. The transition zone of light color rock and purple rock of the deposit is significant and the zoning characteris-tics of the metal minerals of the deposit is also significant. The favorable occurrence space of the metal minerals of the deposit is the intervals of feldspar quartz sandstone. Combing with some related geological working results of the deposit,the geological characteristics of the mining area and deposit,ore-controlling factors and deposit genesis are discussed,the study results show that:①the deposit is mainly hosted in the interaction zone of light color layer and purple color layer of Liuju sub-member of Upper Cretaceous Matoushan Group ( K1 ml1 ) ,the ore-bodies are occurred with stratiform and stratiform-like structures;②the metal minerals of the deposit is mainly for chalcocite,bornite and chalcopyrite,the secondary oxide of the deposit is mainly for ( silicon) malachite,zigueline and covellite,the zoning characteristics of the primary metal minerals of the deposit is significant in the directions of horizontal and vertical;③the deposit mineralization is mainly controlled by NW-direction fault,the shape and occurrence of the ore-bodies are controlled by NE-direction fault,near EW-direction fault and SN-direction fault,the min-eralization is mainly occurred in feldspar quartz sandstone of Liuju sub-member of hypomere of Upper Cretaceous Matoushan Group ( K2 ml1 ) ,the ore-bodies are controlled strictly by strata and lithology,the mineralization is mainly enriched in the alka-line medium environment of the transition zone of strong oxidation zone and strong reducting zone;④the genesis of the genesis of Liuju copper deposit can be attributed to sedimentary diagenesis-epigenetic transformation type "red-bed" sandstone-type copper deposit. Based on the above analysis results,the prospecting target areas of the mining area of the deep part of Xiaohe-Shimenkan and Jiepai-Huojianshan are delineated so as to provide some reference for the further copper deposit prospecting work in the area.%六苴铜矿为位于滇中楚雄盆地的典型砂岩型铜矿床,具有显著的浅色岩层与紫色岩层过渡带及金属矿物的分带性,长石石英砂岩粒间隙为金属矿物的有利赋存空间.结合矿区相关地质工作成果,对矿区及矿床地质特征、控矿因素、矿床成因进行了分析,研究表明:①矿床的主要赋矿层位为白垩系上统马头山组六苴下亚段(K1 ml1)浅色层与紫色层交互带,矿体呈层状、似层状产出;②矿床金属矿物主要为辉铜矿、斑铜矿、黄铜矿,次生氧化物有(硅)孔雀石、赤铜矿、铜蓝等,矿床内原生金属矿物在水平、垂向上的分带性较明显;③矿床矿化主要受NW向断裂控制,NE向、近EW向及SN向断裂控制着矿体的形态及产状,矿化主要产于白垩系上统马头山组下部六苴下亚段(K2 ml1)的长石石英砂岩内,矿体严格受地层、岩性控制,矿化富集于强氧化地带向强还原地带转化的过渡带的碱性介质环境中;④矿床成因属典型沉积成岩-后生改造型"红层"砂岩型铜矿床.在上述分析的基础上,提出矿区小河—石门坎、界牌—火箭山深部为矿区下一步的重点找矿靶区.
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