Petrography is a branch of petrology that focuses on detailed descriptions of rocks. Someone who studies petrography is called a petrographer. The mineral content and the textural relationships within the rock are described in detail.

How is petrography done?

A petrographic analysis is an in depth investigation of the chemical and physical features of a particular rock sample. A complete analysis should include macroscopic to microscopic investigations of the rock sample. ... The scale of investigation depends on the importance of the particular sample of interest.

What is petrography test?

Petrographic testing is the use of microscopes to examine samples of rock or concrete to determine their mineralogical and chemical characteristics. ... The samples are examined through a petrological (geological polarising) microscope, using either reflected or transmitted light.