Location: Esmeralda Co., T3N, R38-39E, Gilbert Mining District
Geology/Description:Castle West is located in the south-central Monte Cristo Range and the south end of the historic Gilbert District. The general area has been explored by numerous mining companies over the last 40 years in search of gold bearing sheeted vein mineralization similar to the world class Round Mountain mine.
The property includes three significant areas of gold mineralization within a very large area of altered Tertiary ash flow tuffs, identified by Kinross Gold in 2009-10 through geologic mapping and surface sampling (Castle, West Castle and Golden Rod).The areas were specifically defined as coherent clusters of rock samples containing greater than one gram per ton gold and strongly anomalous arsenic, antimony, mercury, thallium and tellurium. Castle and West Castle are within large (+4000 feet in diameter) cells of advanced argillic alteration with high angle auriferous chalcedony-calcite veins, stockworks and breccia ribs, characteristic of high level low sulfidation-style hydrothermal systems.The Golden Rod area is a more linear, northwest trending structural zone 800 feet wide and 4000 feet long.
Multi-ounce gold ore was produced from small underground mines in what is now called the Castle Zone during the early days of the District in the early 1920s. Limited production by small miners continued in the 1980s. Modern exploration by companies such as Felmont Oil, Alpha Gold, Santa Fe and Platte River Gold included drilling but always on specific targets within the larger area. Much of this information is anecdotal and specific drill results are no longer available. Felmont concentrated on the Castle Zone with 65 vertical percussion holes but data only exists from about 10 holes that were drilled on privately held claims containing the small producing mine.US Borax and FMC drilled six to ten holes in the Golden Rod zone between 1988 and 1991, but no information is currently available.West Castle has never been tested.
The Castle West property is an excellent volcanic-hosted gold target with high grade vein and bulk tonnage, open pit potential.The primary targets are high angle sheeted vein zones in altered rhyolitic ash flow tuffs.Previous exploration demonstrates that a significant amount of surface sampling is required to identify potential drill targets and that vertical drilling with poor results does not necessarily condemn or properly test a target. The Company has a large collection of useable surface data for the property.
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