👉 Petrographer is a person who specializes in examining and analyzing the physical properties of rocks, minerals, or other materials. They use techniques such as microscopy, x-ray diffraction, scanning electron microscopy (SEM), and others to observe the structure, composition, and crystal structure of these materials. This field can help scientists understand how rock forms over time, which is crucial for understanding geological processes and predicting future changes in the Earth's crust. Petrographists also work with mineralogy, geology