In this chapter we relate the interaction of light with minerals to the study of mineral crystallography. With the fundamentals of optics (covered in Chapter 16) we can now understand the use of the Polarizing Light Microscope for mineral identification.
Topics covered in Chapter 17 include:
• The Polarizing Light Microscope (PLM)
• Sample Types and Preparations
• Birefringence, Retardation, and Orientation of N and n
• Accessory Plates
• Interference Figures (isogyres)
• The Indicatrix Revisited
• Indicatrix on "Stage"
• Interference Figures in Practice
• Orientational Dependence of Images
• Other Optical Phenomena
This Mineralogy and Optical Mineralogy Series is specifically designed to take full advantage of digital media technology to empower students and teachers of mineralogy. Using color photographs, illustrations, movies, 3D models that can be rotated, interactive diagrams, and review questions, this series makes a challenging subject approachable. Also, each chapter in the series is available separately allowing the reader to pick and choose only those chapters they need for their specific course.