Supplementary Data - Fracture analysis of the lithium-bearing Cligga Head granite: Impacts on critical mineral mobilisation and fluid flow

This supplementary data contains fracture measurements carried out in the field and detailed SEM reports (as presented in Figure 9).

Field fracture analysis was carried out at the Cligga Head granite, ~1 km west of Perranporth, Cornwall. Fracture strike and dip measurements were collected by field personal using notebooks, hand lenses and compass clinometers. Fracture measurements have been collated by fracture types and are presented throughout the manuscript in stereonets.

Backscatter electron (BSE) and Energy Dispersive X-ray (EDX) analysis were carried out on a Quanta 650 FEG (field emission gun) Scanning Electron Microscope (SEM) at the University of Manchester Microscopy Centre, Faculty of Science and Engineering. EDX data was collected using an X-MaxN 50 detector and Xtream2 processor, and Aztec oxford instruments software. Analysis used a spot size of 4, a working distance of 10 mm and an accelerating voltage of 20 kV.