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The biaxial indicatrix and optic axes
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Classroom Contents
Optical Mineralogy - Optical Indicatrix, Uniaxial vs Biaxial, Interference Figures - GEO GIRL
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- 1 Review & what this video will cover
- 2 How crystal system affects optical properties of minerals
- 3 Intro to optical indicatrix
- 4 The uniaxial optical indicatrix
- 5 Uniaxial optic axis
- 6 The biaxial indicatrix and optic axes
- 7 Biaxial optic angle and optic sign
- 8 How to apply this to minerals under thin section?
- 9 Bertrand lens & condensing lens
- 10 Uniaxial interference figures
- 11 Uniaxial flash figures
- 12 How to determine optic sign of uniaxial minerals
- 13 Biaxial interference figures
- 14 Biaxial optic angle or 2V angle
- 15 Acute bisectrix figure & obtuse bisectrix figures
- 16 Biaxial optic sign
- 17 Review mineral identification chart
- 18 Upcoming content & NEW PLAYLIST!
- 19 Bloopers!
