摘要
赛北弄锡矿矿体赋存于上三叠统阿堵拉组的砂板岩、细砂岩、粉砂岩的裂隙或断裂破碎带中,成矿时代为燕山晚期。从矿体的产出特征、矿物组合、成矿温度及成矿物质来源,初步判断为中温热液矿床。按锡矿化组合,属锡石-电气石-石英(脉)型锡矿床。
The Saibeinong tin deposit found by Xizang geologic prospecting team No. 1 is the first original one in Xizang. The ore bodies are restricted in cracks and fracture zones within the Adula formation of Upper Triassic, whch is composed of sandy slates, finegrained sandstones, and siltstones. According to the isotopic age of the magmatic rocks related to the ore deposit, the ore-forming period was the Late Yahshan. Baaed on the shape of the ore bodies, mineral assemblage, origin of the ore-forming material and the determining of the ore-forming temperature, this ore deposit is of a medium to low temperature gydrothermal type. Considerring the mineralization assemblage,it is a tin deposit of tinspar-tourmaline-quartz (vein) type.
出处
《矿物岩石》
CAS
CSCD
1991年第4期74-82,共9页
Mineralogy and Petrology
关键词
锡矿
矿床
地质
成因
类乌齐
Leiwuqi, Saibeinong, tinspar-tourmaline-quartz type, suture zone of Paleo-Lancang
