近红外光谱分析技术在蚀变矿物鉴定中的应用  

Mineral Analysis Technology Application with Near Infrared Spectroscopy in Identifying Alteration Mineral

作　　者：修连存[1,2] 郑志忠[3] 俞正奎[3] 黄俊杰[3] 殷靓[3] 王弥建[3] 张秋宁[3] 黄宾[3] 陈春霞[3] 修铁军 陆帅 

机构地区：[1]中国地质大学 [2]南京地质矿产研究所,210016 [3]南京地质矿产研究所 [4]南京中地仪器有限公司

出　　处：《地质学报》2007年第11期1584-1590,共7页Acta Geologica Sinica

基　　金：中国地质调查局地质调查工作项目(编号1212011560704)资助的成果。

摘　　要：近年来,我国近红外光谱测量技术取得了长足发展,它广泛应用在农业、化工、地质、医药测量等领域。利用近红外光谱对C-H(甲基、亚甲基、甲氧基、羧基、芳基等),羟基O-H,巯基S-H,氨基N-H等敏感的特性,可以区分层状硅酸盐中单矿物(粘土矿物、绿泥石、蛇纹石等),含羟基之硅酸盐矿物(绿帘石、闪石等),硫酸盐矿物(明矾石、黄铁钾矾、石膏等),碳酸盐矿物(方解石、白云石等)及这些矿物的不同结晶度。这一原理的应用,为开发野外用小型便携式近红外矿物分析仪及其快速、准确的鉴定岩石标本提供了重要的保障。本文重点介绍低温蚀变矿物的近红外光谱特征、识别方法和定量分析;同时介绍便携式近红外光谱仪原理及指标,最后介绍如何利用矿物特征峰对钻孔、探槽和剖面样品所测数据进行地质建模,从中总结成矿规律,指导找矿。In these years, near infrared reflectance spectroscopy in measure has gotten great progress in our country. It has been applied to many fields such as agriculture, chemistry＆industry, geology, curative measure and so on. Monomineralic mineral in lamination silicate （eg. clayey mineral, chlorite, serpentine and so on）, silicate mineral containing hydroxyl, sulfate mineral, carbonate mineral and different crystallinity of its mineral can be distinguished from using near infrared reflectance spectroscopy sensitivity to CH （methyl, methylene, methoxyl group, carboxyl and aryl）, hydroxy OH, hydrosulfide group SH and amino group NH. Using this theory, it makes developing portable spectrometer with near infrared reflectance and its quick, accurate identification rock specimen to come true. In this paper, near infrared reflectance spectroscopy characteristic of low temperature Alteration Mineral, identification method and quantitative analysis are described. Also, principle and index of portable spectrometer with near infrared reflectance are explained. Last, how to build geology model by drill, exploratory trench and section sample data is recommended using mineral characteristic peak. Then, people sum up metallogenetic regularity and guide how to seek for metallogenetic area.

关 键 词：近红外 矿物分析 定性分析 定量分析 模型建立 蚀变矿物填图 

分 类 号：P575[天文地球—矿物学]