摘要
姑婆山锡矿田锡矿床类型丰富,其中以矽卡岩型、矽卡岩-蚀变断裂破碎带复合型锡矿床为主,矿床主要产于燕山早期姑婆山花岗岩西南接触带2km范围内,且具一定的分带性,从接触带往外,依次为矽卡岩型→矽卡岩与蚀变断裂破碎带复合型→锡石硫化物型→石英脉型。矿床受成矿花岗岩、有利赋矿层位及构造复合等因素的控制,与成矿花岗岩关系尤为密切,成岩、成矿时间接近,成矿物质主要来自岩浆,矿床为与花岗岩有关的岩浆期后热液矿床。
The tin-polymettallic deposits in Guposhan tin orefield of Guangxi Zhuang Autonomous region have various genetic types and are dominated by skarn type and structural alteration-skarn composite type. The tin deposits are concentrated in the southwestern contact zone (2 km in width) and show the characteristics of mineralization zoning: skarn type,structural alteration-skarn composite type ,cassiterite-sulfide type and quartz vein type tin orebodies respectively occur from the contact zone outwards. The tin deposits were controlled by granite,favorable host strata and structures. The mineralization is closely related to granitic magmatism,the mineralized age is a little younger than magmatic intrusion,and major metallogenetic matters and fluids came from magma. So,the deposits belong to post-magmatic hydrothermal type.
出处
《华南地质与矿产》
CAS
2005年第2期53-60,共8页
Geology and Mineral Resources of South China
基金
中国地质调查局国土资源大调查项目(200210200045).
关键词
锡矿田
矿床成因
地质特征
广西姑婆山
tin orefield
genesis of deposit
geological characteristics
Guposhan,Guangxi
