On the methodology of microstructural study of ultramafic rocks by electrone back scattered difraction (EBSD)

Abstract

At the example of ultramafic rocks and chromitites of the Urals, the paper describes the possibilities of microstructural study of geological samples using one of the modern microstructural methods - electron backscattered diffraction (EBSD). This method has a number of advantages compared to previously used optical methods using a universal stage. The main advantages of the method: high accuracy, automation, objectivity, wide range of materials studied. However, there are some difficulties, which consist mainly in the susceptibility of geological materials to secondary changes and superimposed metamorphic processes. The article discusses various possibilities for processing primary materials and obtaining representative data on the microstructure of samples of ultramafic rocks and chromitites from various massifs of the Urals.