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 Now online (1)belb ...and 285 guests Last 5 registered Oplandisks nothingstar N_loop yipe foxtrotromeo Browse members... |
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Members 8025Messages 2613461 Today 4 Topics 127500 |
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Gold deposits occur in quartz veins originally formed by hydrothermal fluid flows through faults, or fissures in the earth's crust. Gold that has been released from quartz veins by erosion and deposited in river bed gravels or beach sands is termed placer gold. The mining of placer gold is now commonly undertaken by hydraulic excavators which extract river bed gravel and deliver it to processing plants where the fine gold bearing material is separated by rotary screens and vibrating tables. This is then examined closely so that free gold particles can be collected (a process called 'tabling'), and the remaining gold bearing sands mixed with metallic mercury in barrels to extract the gold in the form of a mercury-gold amalgam. After washing in water to remove any remaining sand, the amalgam is placed in a sealed retort and heated until the mercury has been evaporated off, condensed and collected under water. The remaining gold along with free gold obtained at the 'tabling stage' is then placed in a crucible, smelted on a furnace and cast into ingots. |
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which are then formed to goldchains around mr-t´s neck and teeth fo rappers. |
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U crazy fool! |
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Goldie looking star for you. |
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