Direct lithium brine extraction from fractured granites is an emerging method for tapping into lithium resources that are stored within the fractures of granite rock formations. Unlike traditional lithium extraction methods, which typically rely on mining ores or evaporating brine from salt flats, this technique focuses on extracting lithium from geothermal brines found within the fractured granite layers. These granite formations, often associated with geothermal energy systems, contain high concentrations of lithium that can be dissolved into brine when subjected to heat and fluid circulation. Water is pumped into these fractured zones, where it absorbs lithium and other valuable minerals from the rock, creating a brine that is then brought to the surface. Once extracted, the lithium can be separated using advanced chemical processes, making it an attractive option for meeting the growing demand for lithium in batteries and electric vehicles. This method is considered environmentally more sustainable than traditional mining because it reduces surface disturbance and offers the potential for a more localized and efficient resource extraction process.

Direct Lithium extraction is applicable to fractured granites in the UK. It reduces the reliance of importation from overseas and is recognised as the most eco-friendly solution.