Exhibit 10.5 AMENDMENT TO MINERAL RIGHTS REVENUE SHARING AGREEMENT DATED APRIL 24, 2006 This Amendment dated December 8, 2010. BETWEEN: Jorge Alberto Almarez ("Mr. Almarez"), an individual under the laws of Mexico and having an office at: 157 Calle...Mineral Rights Revenue • December 21st, 2010 • Placer Del Mar, Ltd. • Metal mining
