新疆博乐喇嘛苏铜矿床地质特征和成因研究

喇嘛苏铜矿床矿区地层铜背景为含量偏低，但矿区岩浆岩含铜较高，“Ｉ”型花岗岩类，成矿阶段划分为３个阶段，石英－氧化物阶段，硫化物阶段，晚期石英－硫化物阶段，硫，铅同位素证据表明，成矿物质主要来源于矿区岩浆岩，氢氧同位素证据表明在氧化物阶段成矿热液主要为岩浆水，硫化物阶段则已是大气降水与岩浆水的混合热液，结合黄铁矿的富硫特征，进一步论证喇嘛苏铜矿床典型夕卡岩型铜矿，并探讨其厚大似层状贫铜矿体内的富铜矿

Geological Features and Genesis of the Lamasu Copper Deposit in Bole County, Xinjiang

The Lamasu copper deposit was once an important prospected area in Xinjiang. There are several hypotheses about the genesis of the deposit, e. g. skarn type, strata-bound type and porphyry type. According to a great number of sulfur, lead, oxygen isotopic and other data, the writers believe that it is a typical skarn type copper deposit. The main mineralization is a large stratoid copper orebody and the main sulfide is pyrrhotite (chalcopyrite is subordinate). As the copper-bearing hydrothermal solution flowed through the carbonaceous limestone bed rich in collof orm pyrite and framboidal pyrite, sulfur f ugacity increased, and thus chalcopyrite was precipitated and high-grade copper orebody was formed.