Distinguishing Prehnite from other Similar Stones by Color Using Discriminant Analysis

Abstract

This paper, based on CIE1976 Uniform-Chromaticity scale, devotes to distinguish prehnite and other similar stones (Jadeite, Olivine, and Emerald) by discriminant analysis, and explore the possibility to identify them by color. The Color i5 device is adopted to get information about L, a, b, C, h of four kinds of stones. And here takes L, a, b as variables, classify 4 kinds of samples into 8 classifications through K-means cluster analysis by SPSS16.0. Here also use Fisher discriminant analysis to test the reasonability of classification. Through discriminant analysis, most stones of four kinds can be distinguished by color.