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The History of Ore Microscopy
Reflected Light Microscopy
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amount angle anisotropic aperture Applied Ore Microscopy arsenopyrite artificial resin azimuth bakelite Berek bornite calcite cassiterite chalcocite chalcopyrite chamosite cleavage coarse colour comminution concentrate contain copper covellite crossed nicols deposits determination diaphragm direction dressing Econ elliptical exsolution eyepiece field flotation frequently galena gangue gangue minerals Geol gold grain boundaries grey grinding and polishing grinding wheel hematite ilmenite important incident light inclusions index of refraction intergrowths iron lamellae Leitz lepidocrocite limonite Magn magnetite magnification manganese measurements metals metamorphic method microns microscope microscopic investigation minerals objectives observation occur oil immersion oolites opaque illuminator optical oscillation oxidation particles plane polarized polarized light polished sections polished surface position possible prism properties pyrite pyrrhotite quartz Ramdohr ray path reflected light microscopy Rehwald replaced rotation rutile samples Schneiderhohn siderite silicates silver specific gravity specimen sphalerite stage stibnite sulfides sulphides symmetry temperature tetrahedrite texture transmitted light tube various minerals