摘要
镁铝榴石是找寻金刚石的一种重要的指示矿物。本文应用了聚类分析方法,以镁铝榴石中的钙组分、铬组分、镁组分和铁组分(铁铝榴石)4种成分参数作变量,将56个样品分为6类,讨论了每一类中样品的化学成分特点,确定了它们的标型意义,并应用多元判别分析得出了划分这6类和对未知样品进行判别归类的一组判别函数。
Pyrope is one of the important directory minerals for exploration of diamond. Using four chemical composition indexes:Ca-,Cr-,Mg-and Fe-component as variables,56 pyrope samples have been classified into six groups with cluster analysis. The characteristics of chemical composition of each group are discussed and associated with its natural genesis, and therefore,the pyrope from each of the groups is of specified significance refered to exploration of diamond. Multiple discriminant analysis was then used to establish a group of discriminant functions relative to the samples in the six groups of pyrope respectively.
出处
《矿物岩石》
CAS
CSCD
1990年第1期12-18,共7页
Mineralogy and Petrology
关键词
镁铝榴石
化学成分
聚类分析
判别分析
找矿标志
分类
标型特征
金刚石矿床
pyrope
chemical composition
cluster analysis
discriminant analysis
classification
typomorphic characteristic
diamod
