Orientational mapping of minerals in Pierre shale using X-ray diffraction tensor tomography.

ABSTRACT: Shales have a complex mineralogy with structural features spanning several length scales, making them notoriously difficult to fully understand. Conventional attenuation-based X-ray computed tomography (CT) measures density differences, which, owing to the heterogeneity and sub-resolution features in shales, makes reliable interpretation of shale images a challenging task. CT based on X-ray diffraction (XRD-CT), rather than intensity attenuation, is becoming a well established technique for non-destructive 3D imaging, and is especially suited for heterogeneous and hierarchical materials. XRD patterns contain information about the mineral crystal structure, and crucially also crystallite orientation. Here, we report on the use of orientational imaging using XRD-CT to study crystallite-orien

SUBMITTER: Murer FK 

PROVIDER: S-EPMC8420771 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature