XXth Century: modern mineralogy
* Crystallography: from the geometrical study of crystals to X-ray crystallography
* Chemical properties
* Physical properties
- Optical properties: a most important feature for recognition and analysis
- An unexpected discovery due to the polarizing microscope: the liquid crystals
- Other physical properties (electric, magnetic and thermal)
* Modern methods of analysis of minerals
* Theoretical mineralogy
- Twins
- Epitaxy
* The ambiguous relationship between mineralogy and the other domains of the Earth-Sciences: the aim of museums
* Fluid inclusions an outstanding result of modern mineralogy