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Petrographic microscope
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<p>A petrographic microscope is a type of <a href="/facts/Optical_microscope/5700vcna">optical microscope</a> used to identify <a href="/facts/Rock_(geology)/FXCJkmop">rocks</a> and <a href="/facts/Mineral/LkUFbNmv">minerals</a> in <a href="/facts/Thin_section/FygaCHxS">thin sections</a>. The microscope is used in <a href="/facts/Optical_mineralogy/yxkIAoRw">optical mineralogy</a> and <a href="/facts/Petrography/BLC9xpdJ">petrography</a>, a branch of <a href="/facts/Petrology/RXq9gCdo">petrology</a> which focuses on detailed descriptions of rocks. The method includes aspects of <a href="/facts/Polarized_light_microscopy/afV0PRtD">polarized light microscopy</a> (PLM). </p>