Headquartered in Vancouver, Canada, Alerio Gold Corp. is a mineral exploration... Headquartered in Vancouver, Canada, Alerio Gold Corp. is a mineral exploration and development company. It specializes in acquiring, exploring, and developing natural resource properties across South America. The company holds a 100% interest in two gold projects located in Guyana, notably the Tassawini property, which spans 3,413 acres northwest of Georgetown.