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NioGold Mining Reports 65.8 Percent Recovery in Columb Leach Tests at Marban
NioGold Mining (TSXV:NOX) released the results of preliminary column leach tests on composite samples from its Marban deposit in Quebec. Highlights included gold recoveries of up to 65.8 percent.
NioGold Mining (TSXV:NOX) released the results of preliminary column leach tests on composite samples from its Marban deposit in Quebec. Highlights included gold recoveries of up to 65.8 percent.
As quoted in the press release:
Following initial satisfactory coarse bottle roll tests, standard six-inch column leach tests were done on two different grind sizes (quarter-inch or 4.2 mm and eighth-inch or 2.2 mm) of a composite created from six 100 kg samples. Results are summarized below for the two agglomerated ground composites:
Maximum recoveries of 65.8% were obtained from agglomerated eighth-inch grind (2.2 mm) over a 91 day leach period, with moderate cyanide consumption. Recoveries of quarter-inch (4.2 mm) material were comparable at the end of the 91 day run. Progressive recoveries over the 91-day leach time period are summarized in the next table, indicating relatively slow but not uncommon leach times for heap leach operations:
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