How To Make $50,000 Per Year Recovering Gold From Black Sand
Black sand concentrates are a combination of minerals in the iron group. Hematite, Fe3O3, with a specific gravity of 5.26, an iron mineral that is nonmagnetic. Magnetite, Fe3O4, with a specific gravity of 5.20, is magnetic.
These black sands will weigh a third (1/3) to a fourth (1/4) the weight of gold (Au). Gold (Au) has [...]
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« Last Edit: April 08, 2010, 07:32:04 am by seldom »
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