摘要
矿床直接产于一套浅成—超浅成或次火山侵入的花岗质潜火山杂岩中。赋矿岩石为斜长花岗岩、石英闪长岩、闪长岩及英安玢岩质隐爆角砾岩。矿石矿物有孔雀石、兰铜矿、兰辉铜矿、赤铜矿、黄铜矿、斑铜矿、黄铁矿等。矿石结构构造为交代残余结构、包含结构和星点状、细脉状、网脉状、团块状构造。围岩蚀变为硅化、赤铁矿化、碳酸盐化、绢云母化和绿泥石化。成矿温度为１１９℃～１９０℃。成矿时代为海西中晚期。隐爆角砾岩筒中石英—钾长石—黄铜矿脉的石英包裹体氢氧同位素δＤ为－１０１．７‰，δ１８Ｏ为８．４‰，钾长石Ｋ—Ａｒ法年龄为２１１±３Ｍａ。
The Ulunbulake copper deposit is hosted in a suite of hypabyssal or subvolcanic complex composed of plagiogranite, quartz diorite,diorite, and dacite porphyry cryptoexplosion breccia. Ore minerals consist of malachite, azurite, digenite,cuprite, chalcopyrite, bonite, pyrite etc. Ore is characterized by replacement remnant texture, poikilitic texture, desseminated structure, veinlet structure and massive structure. The thermal alteration features silicification, hematitization, carbonitization, sericitization and chloritization. The metallogenic temperature ranges from 119℃ to 190℃.δD is -101.7‰ and δ 18 O is 8.4‰. The metallogenic age is dated about 211±3 Ma by K-Ar method.
出处
《地质与勘探》
CAS
CSCD
北大核心
1998年第5期8-13,共6页
Geology and Exploration
关键词
铜矿床
斑岩铜矿床
矿床成矿
地质特征
角烁岩筒
granitic subvolcanic complex, porphyry copper deposit hosted in cryptoexplosion breccia, metallogenic feature, Ulunbulake, Xinjiang
