HALIFAX, NOVA SCOTIA — (Marketwired) — 04/10/13 — Erdene Resource Development Corp. ("" or "Company") (TSX: ERD), today announced that the Xstrata Coal Mongolia Alliance Agreement has been discontinued and provided an update on the Company-s strategic objectives.Mongolia Coal AlliancePursuant to the terms of the Mongolia Alliance Agreement ("Agreement") entered into on February 13, 2006, between Xstrata Coal Canada Limited and Erdene, the parties have mutually a