摘要
对产于北祁连中段冷龙岭一带的青分岭金矿和干沙河稀土矿地质特征和控矿因素进行了概述 ,并将其与国内典型的河北东坪金矿和四川牦牛坪稀土矿进行对比研究 ,认为它们的成因与碱性岩有关 ,且干沙河稀土矿具有斑岩型矿床的特征。两矿的成矿期为海西中晚期 (青分岭二长岩成矿年龄为 2 90～ 30 8Ma ,干沙河霓辉正长斑岩为 2 5 6Ma)。
The Qingfengling gold deposit and Ganshahe REE deposit are two typic deposits in Lenglongling area of the middle part of the northern Qilian orogenic belt. Based on contrast study with the Dongping gold deposit in Hebei Province and Maoniuping REE deposit in Sichuan Province,it is concluded that the two deposits are related to alkaline rocks whose isotopic ages ranging from 256Ma to 290～380Ma and the Ganshahe REE deposit shows the characteristics of porphyry deposit. All the deposits in the studying area were formed during the Hercynian period.
出处
《华南地质与矿产》
CAS
2001年第4期45-49,57,共6页
Geology and Mineral Resources of South China
