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The History of Ore Microscopy
Reflected Light Microscopy
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absorbing crystals amount angle anisotropic aperture Applied Ore Microscopy arsenopyrite artificial resin azimuth bakelite Berek bornite calcite cassiterite chalcocite chalcopyrite chamosite cleavage coarse colour comminution concentrate copper covellite crossed nicols cubanite 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 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 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 sulfides sulphides symmetry temperature tetrahedrite texture transmitted light tube various minerals