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October 08, 2012, 12:16:37 AM |
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The Germans are making Bio Gold. Though a chemical process - it's almost not worth the investment but the gold is sold at market price. Gold is gold, Mined or alluvial gold is priced based on the percentage of other metals; copper, silver, tungsten, iron etc. A weekend gold miner would be happy if paid 70% of spot for some raw washed gold. As a hobby gold miner it's not worth the effort to cast small bullions yourself, as it's harder for the buyer to judge the purity of the larger bullion so you will get a lower price.
About fouling of the electrodes, yes that might be a problem. Some tuuting blinking buys have aluminium copper electrodes to generate electricity and the galvanic action keep them clear of marine growth.
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