Petrography is a branch of petrology that concentrates on detailed descriptions of rocks. A person that studies petrography is called a petrographer. The mineral web content and the textural partnerships within the rock are explained carefully. The category of rocks is based on the info gotten throughout the petrographic evaluation. Petrographic descriptions start with the area notes at the outcrop and also include macroscopic descriptions of hand specimens. Nevertheless, one of the most crucial tool for the petrographer is the petrographic microscopic lense. The detailed analysis of minerals by optical mineralogy in slim sections and also the micro-texture and structure are vital to recognizing the beginning of the rock. Electron microprobe or atom probe tomography analysis of individual grains along with whole-rock chemical evaluation by atomic absorption, X-ray fluorescence, and laser-induced break down spectroscopy are made use of in a modern petrographic lab. Specific mineral grains from a rock sample might also be evaluated by X-ray diffraction when optical means want. Evaluation of microscopic liquid inclusions within mineral grains with a home heating stage on a petrographic microscopic lense gives hints to the temperature level as well as stress problems current throughout the mineral formation.