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Author: Admin | 2025-04-28
Alluvial mining to produce gold, and in the 19th and 20th centuries, alluvial mining was made famous by the California, Klondike and Colorado gold rushes, among others. A variety of alluvial mining techniques were used over this time, but all relied on the same premise: using water to wash gold-bearing sediment.When this gold-bearing sediment is loose (gravel, for example), separation is easy. However, such deposits tend to have low gold concentrations. Conversely, when the gold-bearing sediment is consolidated, gold concentrations are higher, but extraction is more complex, with drilling and blasting required to remove overburden.Loose gold-bearing sediment is understandably the preference for artisanal miners, while consolidated deposits require the capital and force of mining companies. It’s fairly uncommon to hear about alluvial gold-mining companies, but one example is Guskin Gold (OTCQB:GKIN), which is engaged in gold exploration and alluvial mining in Ghana.Alluvial mining for diamondsAround 10 percent of the world’s rough diamonds are sourced through industrial alluvial mining, while another 14 percent are uncovered using small-scale alluvial mining techniques. Alluvial diamond mining is particularly prevalent in Africa — for example, De Beers has alluvial mining operations in Namibia. Additionally, Diamcor Mining (TSXV:DMI) has identified two high-grade alluvial diamond deposits on its Venetia project in South Africa.Alluvial mining for diamonds is similar to alluvial mining for gold in that it essentially involves separating diamonds from sediment.At industrial operations, that is accomplished in various ways. For instance, when diamond-bearing sediment is found on the ocean shore or in river beds, it is
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