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(一) 概述 (1) 发展方向矿相学已发展到定量测定不透明矿物光学常数等的阶段。这可以与透明矿物相比。目前定量测定的常数有反射率,各种旋转角,显微硬度等。 (2) 仪器情况近年来,岩石显微镜改进不大,但矿相显微镜精密程度大大提高。这表现在:前偏光镜能旋转调方位,并能锁紧;上偏光镜能任意转360°,读数精确至0.1°;基本上都采用平象物镜;油浸物镜由低至高倍品种完全;光源采用高强度卤钨灯或氙灯等等。使定性观察变得容易,定量测定准确。
(A) Overview (1) Development direction Mineralogy has been developed to quantitatively determine the opaque mineral optical constants and other stages. This can be compared with transparent minerals. The constant quantitative determination of the current reflectivity, a variety of rotation angle, microhardness and so on. (2) The condition of the instrument In recent years, the improvement of the rock microscope is not great, but the precision of the phase-contrast microscope is greatly improved. This is reflected in: the front polarizer can rotate the transfer position, and can be locked; the polarizer can rotate 360 ° arbitrary, accurate readings to 0.1 °; basically use the flat as the objective lens; oil immersion objective from low to high variety completely; Light source using high-intensity halogen or xenon lamp and so on. Make qualitative observation easy, quantitative determination accuracy.