Gold average recovery is higher than 93% for the zones "Santo Niño", "Loma Verde Norte", "Impulsora", "La Bufa" and "Loma Verde Sur", whereas "Descubridora" and "Promontorio" returned 86.2% and 66.1% respectively. The highest gold recovery was 98.5%. The bulk of the gold was recovered within the first 48 hours.
Silver recoveries varied from 69.0% to 92.3%, with an average silver recovery of 79.6%. Silver recovery percentage was still increasing at the 96 hour mark of the leach tests.
Gold and Silver Head Grades, Recoveries and Reagent Consumption
Zone | Head Grade | Head Grade | Recovery Au (%) | Recovery Ag (%) | Consumption | Consumption |
Santo Niño | 2.21 | 229.0 | 95.0 | 83.9 | 1.02 | 0.27 |
L Verde Norte | 0.97 | 154.0 | 93.6 | 92.3 | 0.66 | 0.40 |
Impulsora | 3.01 | 9.0 | 95.8 | 69.0 | 0.51 | 0.22 |
3.08 | 117.0 | 98.5 | 72.9 | 0.56 | 0.22 | |
Promontorio | 2.06 | 45.0 | 66.1 | 75.9 | 0.61 | 1.69 |
Descubridora | 0.80 | 95.0 | 86.2 | 75.9 | 0.71 | 0.17 |
L Verde Sur | 1.63 | 113.0 | 95.0 | 87.6 | 0.76 | 0.30 |
The research was conducted in the Durango City laboratories of SGS. Ball mill grinding kinetics were carried out to obtain the appropriate times to reach the particle size of 80% passing through 200 mesh (75 microns). Bottle roll testing was carried out for each sample to evaluate recovery of gold and silver. The tests were developed in 5 litre bottles, using ~ 1000 grams of sample, for a retention time of 96 hours. During this period, monitoring was carried out at intervals of 2, 6, 12, 24, 48, 72 and 96 hours to obtain solution samples to assess the kinetics of gold and silver dissolution. Consumption of the reagents sodium cyanide and calcium oxide were also determined. Multi-sample assay testing was performed to determine the head grades and tailing grades for each zone.
Coneto is situated around the town of
The Project consists of approximately 4,997 hectares (11,860 acres) of contiguous mineral concessions and covers multiple mineralized low to intermediate-sulphidation epithermal quartz veins. Excellent infrastructure exists in the Coneto area, including paved road access, electrical power, water and manpower from nearby communities.
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President and CEO
FORWARD LOOKING STATEMENTS
This News Release may contain forward-looking statements including, but not limited to, statements with respect to the planned program and budget for the Project. Forward-looking statements address future events and conditions and therefore involve inherent risks and uncertainties. Actual results may differ materially from those currently anticipated in such statements and
For additional information on risks and uncertainties, see the Company's most recently filed annual management discussion and analysis ("MD&A"), which is available on SEDAR at www.sedar.com and on the Company's website at www.orexminerals.com. The risk factors identified in the MD&A are not intended to represent a complete list of factors that could affect the Company.
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