The province is bordered on the east by the MarÃ a Trinidad SÃ nchez and SamanÃ provinces , on the south by the Monte Plata and SÃ nchez RamÃ rez provinces , on the west by the La Vega and Hermanas Mirabal provinces and on the north by the Espaillat and MarÃ a Trinidad SÃ nchez provinces . Duarte borders with provinces MarÃ a Trinidad SÃ nchez , Espaillat and SamanÃ to the north ; with SamanÃ to the east ; with Monte Plata and SÃ nchez RamÃ rez to the south ; and with Hermanas Mirabal and La Vega to the west .