摘要
通过对喀木斯特及其周围地区锡矿进行勘查和剖析,总结了与其相关性较大的蚀变类型及蚀变矿物组合,利用航空高光谱数据(SASI-TASI)对该地区进行蚀变矿物填图;使用TASI热红外数据,通过SiO_2光谱特征经验公式推演和运用,计算SiO_2含量,进行高SiO_2区(带)提取。结果表明,高硅条带提取精度高,高硅条带主要分为硅化带和酸性岩脉(潜火山岩脉);硅质条带叠合水云母化、云英岩化蚀变带多发育锡矿等多金属矿化,为锡矿的遥感找矿标志。根据这些信息,圈定多个锡矿成矿预测区,部分区段发现了较好的锡矿化。
In this paper, areas around Sn deposits in Kamust were investigated and analysed to find alteration minerals and their assemblage related to Sn minweralization. Hyperspectral shortwave （SASI） data were used to extract those alteration minerals information, and the thermal infrared data--TASI were used to distinguish the high SiOz belts. The research result shew that high SiO2 belts are silicified zone and acid veins; Sn deposit are close related to fracture, hydromicazation and greisenization. Therefore, silieified belt with high hydromicazation, muscovite can be used as the exploration sign for Sn mineraliza- tion. Several pros!oective areas were delineated some of them were checked out with Sn mineralization.
出处
《铀矿地质》
CAS
CSCD
2017年第4期241-245,共5页
Uranium Geology
关键词
高光谱遥感
东准噶尔
硅化带
锡矿
hyperspectral remote sensing
east Junggar
silicified zone
Sn deposit
