Gold wedge5/15/2023 ![]() All federal and state permitting to operate the Gold Wedge Mine at Manhattan was completed in 2003. Currently, MMC controls approximately 4,000 feet of strike length extending more than 1100 ft from the Echo Bay open pit claims on the south end to the Manhattan Caldera margin on the northern end. The continued downturn in the gold market, tight corporate budgets and high holding costs for the properties forced companies to turn back the land positions to the claim owners. Continued exploration by Crown Resources and others on MMC claims indicated thick (5+'-25') intersections of grades greater than 0.5 opt gold. considered an underground mine development in 1988 on the Gold Wedge deposit, but they backed off because of high land holding costs to Freeport and limited participating interest. ![]() This exploration resulted in the development of the East and West Pit Deposits (adjacent to Gold Wedge), which produced approximately 260,000 ounces at an average grade of 0.06 opt gold from 1990 to 1996. completed major programs to delineate open pit reserves. Houston Oil and Minerals, Freeport Exploration and Echo Bay Mines Ltd. Recent exploration (1980s-1990s) was focused on building large bulk tonnage open pit reserves in the district. This type of production continued until 1947 and produced a total of 330,000 ounces of gold up to 1967. By 1909 the district had developed into a number of productive high grade underground "vein" deposits containing coarse gold and numerous placer deposits. An updated resource, along with metallurgy and recovery statistics, should be available as test mining continues into 2007Ĭomment (Location): The project area is located within the Manhattan Mining District in the south part of the Toquima Range, about 13 miles south of the Round Mountain Gold Mine.Ĭomment (Development): The mining district was first organized in 1867 the name Manhattan was adopted in 1905 when John Humphrey found gold at the foot of April Fool Hill. The gold system is open along strike, down-dip and down-plunge toward the northwest. Manual resource calculations indicated a larger measured and indicated resource with substantial inferred resources. A 2005 Technical Report estimated the current Goldwedge resource at 330,000 tons grading 0.310 opt gold based upon a geostatistical (kriged) estimate. Output from the test mining program is forecast to be approximately 20,000 ounces of gold expected in 2006. In 2002, the property was reported to contain measured gold resources of 104,706 ounces at 0.494 opt, indicated resources of 47,052 ounces at 0.583 opt, and 394,626 ounces of inferred resources at 0.494 opt, all at a 0.15 opt cutoff grade. In 1997, proven and probable reserves for Gold Wedge were reported at 1.7 million tons of ore grading 0.13 opt Au, with a total resource of 5.3 million tons of ore grading 0.19 opt Au. ![]() The gravity separation should be sufficient to recover about 85 percent of the gold, with a chemical heap leach process bringing the total recovery to the mid-90 percent range.Ĭomment (Economic Factors): The Manhattan district has produced a total of approximately 1 million ounces of gold, including the adjacent East and West Pit deposits from which Echo Bay produced approximately 260,000 ounces at an average grade of 0.06 opt gold from 1990 to 1996. The facility also includes a furnace for smelting/refining the gold concentrate product. The building contains a crushing and screening plant, a wash plant, a jig recovery plant, ball mill, and a series of gold tables to complete gold recovery. By the end of 2005, Royal Standard had completed construction of its gold recovery plant at the Goldwedge Project, includimg two fresh water containment ponds, mill waste rock containment /leach pad area and a 15,000 square foot building to house the primary plus secondary grinding and the gravity recovery facilities. ![]() The proposed underground mine will be developed by a 2,000-foot decline to a depth of 350 feet. Echo Bay and Round Mountain operated an open pit operation adjacent to the Gold Wedge property in the 1980s-1990s. Description: The Gold Wedge Deposit occurs at the intersection of north and northwest trending faults.The north-trending Reliance fault is mineralized in the mine area.ĭescription: The upper plate of a thrust fault.Ĭomment (Workings): Historic workings consist of a 500 ft vertical shaft with five levels. ![]()
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