Regarding commercial deposits of minerals on PEI, nothing to date has been found (according to the Prince Edward Island - Wikipedia page). However, there have been several natural gas wells working there since the 1940s. read more
Mineral resources have not been discovered in commercial quantities although trace deposits of coal, uranium, vanadium and other minerals exist. Since 1940, drilling has revealed the existence of natural gas beneath the seabed off the northeast part of the province, but no commercially exploitable finds have been made. read more