本文選題：里伍銅礦床和黑牛洞銅礦床 + 伴生金元素��； 參考：《礦物巖石》2017年01期

【摘要】：利用掃描電鏡結(jié)合能譜分析技術(shù)以及電子探針?lè)治黾夹g(shù),針對(duì)四川甘孜江浪礦田里伍銅礦床和黑牛洞銅礦床中伴生金元素的賦存狀態(tài)進(jìn)行分析。結(jié)果表明:金分布在兩個(gè)礦床的致密塊狀礦石、角礫狀礦石、條帶狀-網(wǎng)脈狀礦石及黑色電氣石黃銅礦礦石中,圍巖中不含Au。且Au在礦石中質(zhì)量分?jǐn)?shù)變化大,其范圍為0.1×10~(-6)~5.5×10~(-6)。Au以獨(dú)立礦物銀金礦和金銀礦的形式賦存。銀金礦顆粒較大,僅在里伍銅礦床的尾礦中發(fā)現(xiàn),約90μm,銀金礦中金含量為68.12%~70.79%。金銀礦的粒徑變化范圍大,為:0.01μm~25μm,金銀礦中金的含量范圍大,為:5.14%~40.81%。金銀礦在礦石中的賦存狀態(tài)主要為以下3種:(1)與鉍礦物(自然鉍和鉍銀礦)共生;(2)包裹在金屬硫化物中或嵌布在金屬硫化物的粒間;(3)沿金屬硫化物粒間充填。第一種金銀礦的形成主要經(jīng)歷了溫度高于400℃的體系,成礦流體中的Au,Bi均以氯絡(luò)合物的形式運(yùn)移,在溫度降低的過(guò)程中,Au和Bi同時(shí)沉淀,從而形成金銀礦與鉍礦物的共生結(jié)構(gòu);第二種金銀礦為溫度降低過(guò)程中,隨著硫化物的沉淀,Au-S絡(luò)合物分解,使得Au沉淀;第三種金銀礦應(yīng)為主成礦期后的含Au,Ag的熱液充填裂隙沉淀成礦的產(chǎn)物。
[Abstract]:The occurrence state of associated gold elements in Liwu copper deposit and HeiNiudong copper deposit in Ganzi River mine was analyzed by means of scanning electron microscope (SEM), energy dispersive analysis (EDS) and electron probe analysis (EPMA). The results show that gold is distributed in dense massive ore, breccia ore, banded netted vein ore and black tourmaline chalcopyrite ore, and there is no Au-bearing in surrounding rock. The au content in the ore varies greatly, and its range is 0. 1 脳 10 ~ (10) -6 ~ (5) ~ (5) 脳 10~(-6).Au, which occurs in the form of an independent mineral, silver gold deposit and gold and silver ore. The silver gold deposit is large in grain size, only found in the tailings of the Liwu copper deposit, about 90 渭 m, and the gold content in the silver gold deposit is 68.12 ~ 70.79. The size of gold and silver ore varies from 0: 0.01 渭 m to 25 渭 m, and the content of gold in gold and silver deposit is very large, which is 58.14 渭 m and 40.81 渭 m, respectively. The occurrence state of gold and silver ore in ore is mainly as follows: 1) and bismuth mineral (natural bismuth and bismuth silver ore) are encapsulated in metal sulfides or embedded in the intergranular of metal sulfides (3) filling along the metal sulphide intergranular. The formation of the first kind of gold and silver ore mainly experienced the system with temperature higher than 400 鈩，

本文編號(hào)：1900177