【摘要】 <正> 金属矿物的反射色,是金属矿物的重要属性,也是反射偏光显微镜下鉴定这类矿物的主要特征。长期以来,人们一直采用所谓主观的描述法表述金属矿物的反射色。例如:黄铁矿被称为淡黄色或乳色,黄铜矿被称为黄色,铜蓝被称为蓝色,辉铜矿被称为淡蓝色等等。这一表述法的缺点在于:一、没有客观的定量概念,反射色的命名可因人而异;二、多种矿物连生时,人们对反射色的感觉,受到连晶反射色在视觉中的迭加作用,可以发更多还原

【Abstract】 This article deals with the method of color measurement and the results of 103 minerals surveyed. The process of measurement is after the projection proposed by H. piller, i.e. first to determine the reflectivities at certain selected wavelengths with which the reflectivity dispersion curve is drawn, and then to calculate the color indices on the Hardy’s selected ordinates with Sc as light source.Every mineral is specified with five numbers, namely: R_vis, x, y, λ_d, P_c. Occasionally more than one set of color indices are calculated from different specimens for comparison. By means of 10 interference filters, the reflectivities are measured with 10 wavelengths : 405nm, 436nm, 480nm, 526nm, 546nm, 589nm, 644nm, 656nm, 644nm, and 700nm. For certain minerals of pronounced variation in the curves the intervals of monochromatic light are probably too large.In the last part of this article the authors discuss the distribution character of the common ore minerals in the chromatic chart, the error of measurement and the problem of classification of color gradation in practical work.It is very much desired that in the description of the reflection color of ore minerals, the objective method of measurement will replace the subjective one in the near future because of its reliability and high accuracy.更多还原