东昆仑卡特里西铜锌矿成因

卡特里西铜锌多金属矿是新疆东昆仑地区首次发现的海相火山沉积型硫化物矿床,该矿产于下石炭统托库孜达坂群内的火山岩地层中,矿体分布明显受地层控制,含矿岩性为一套双峰式火山岩上部的灰绿色基性凝灰岩,一般呈平行层状、似层状、透镜状夹于灰岩中及灰岩与含炭粉砂岩的接触处。该矿海相火山沉积特征明显,为在相对封闭的浅海盆地内,火山活动形成的成矿物质在火山机构边部洼地内堆集形成。东昆仑下石炭统托库孜达坂群地层中海相火山岩带分布有众多铜多金属矿点,为一较有前景的海相火山岩型铜矿成矿带,卡特里西铜锌矿找矿及成因认识上的突破不但填补了东昆仑一带该矿床类型的空白,而且对在该区广泛分布的托库孜达坂群内火山岩系地层中寻找该类矿床具有重大指导意义。

THE GENESIS OF KATELIXI COPPER ZINC DEPOSIT IN EAST KUNLUN MOUNTAINS

Katelixi copper zinc deposit is the type of marine volcanic sediment sulfide deposit first discovered in east Kunlun Mountains, and its formation is controlled by the volcanic rocks of Tuokuzidaban Group in Carboniferous. The host rocks for the ores are gray-green tuff intercalated in limestone and siltstones occurring in layers or lens. The deposit is located in a marine basin and shows distinct characteristics of marine volcanic sediments, and is generally accumulated in depression of volcanic rocks. The Tuokuzidaban Group in Carboniferous was developed in marine volcanic rocks under favorable ore forming conditions. In addition to the Katelixi copper zinc deposit, we have discovered several occurrences of marine volcanic sulfide deposit. The research shows significance for ore prospecting in east Kunlun Mountains.