GLY 4200C LAB EXERCISE 10 INTRODUCTION TO THE PETROGRAPHIC MICROSCOPE AND RELIEF, BECKE LINE, AND OBLIQUE ILLUMINATION Locate all of the following microscope parts. Refer to Figurel Eyepiece (note the power) Illuminator Objectives (note the powers) Condenser Coarse focusing control Condenser focusing knob Polarizer Fine focusing control Bertrand lens knob Substage iris diaphragm Analyzer knob or slide Illuminator iris diaphragm Stage Mechanical stage Figure 1 1) 2) 3) 5) 6) 7) 8) Compensator slot Compensators Ocular- Bertrand Lens Objective Lens Stage Goniometer Iris Diaphram Lower Polar Light in Base 1 9) 10) 11) 12) 13) 14) 15) 16) Upper Polar Accessory Plate Focusing knob Condensor Lens Base