Procedures for optical analysis of minerals with parallel light
firstly, we observe the crystals in plane polarized light (1P). We study:
- Transparency
- Colour
- Pleochroism
- Habit
- Relief
- Cleavage, fracture
- Inclusions
- Alternations
After that, we study minerals in crossed polarised light (PX):
- Isotropic or anisotropic
- Extinction
- Interference colours
- Distinguishing Features
