VANCOUVER, Feb. 23, 2018 /PRNewswire/ - Oroco Resource Corp. (TSX-V: OCO) ("Oroco" or "the Company") is pleased to announce that it has acquired, through its wholly-owned Mexican subsidiary, Minera Xochipala, S.A. de C.V. ("MX"), a 77.5% interest in each of the La China II and Amp. Santo...