Carbon capture and storage (CCS) in geological systems provides a very promising solution for sequestering current CO2 production and allows critical processes that are difficult to decarbonise to continue running into the future. Interfacial properties are crucial in determining the rate of mineral dissolution, which is the rate-limiting step in the mineral carbonation process after CO2 injection. Therefore, understanding the suitability of different rock types for CCS requires detailed knowledge of their interfacial properties both before and after CO2 injection. As part of the InFUSE Prosperity Partnership between Imperial College London, Diamond Light Source, and Shell, in this project, we propose to measure both the distribution of interfaces within basalt rocks via high-resolution Electron Backscatter Diffraction (EBSD) and the mechanical properties of individual key interfaces via microscale mechanical testing. Eventually, by relating the rate of CO2 uptake to the type of interfaces, we aim to provide insights into the selection of the optimal rock type with an ideal interface distribution.