Figure 10. Drill core from the Faraday Mine area. The light colour is the pegmatite (Gentry’s Po pegmatite) cutting into marble (top) and metasedimentary paragneiss (bottom) making up the wall-rock by the dike. Visible in the photograph is the change in cristal size of the pegmatite from the wall rock to the core. Photo by J.R. Wakefield. Cores courtesy of Bill Grant, Drillcore Library Geologist at Bancroft (1987).