Technical Report for the Maricunga Gold Mine - Kinross Gold

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Kinross Gold CorporationMaricunga Mine Technical Report• blast hole data• trench data and;• drill data within the previously mined portion of the Verde pits.For Pancho some historical data was also excluded. They included trench data and originalAnglo American drill holes for which location could not be confirmed. These were part of holeseries SHR and SDR.Unexplained missing data was assigned a zero value for all analyses. Explained missingdata was treated as missing data and ignored during processing.StatisticsBasics statistics were calculated for the original 2 m gold assays. The results for Verde andPancho gold assays are presented in Table 17-2 and Table 17-3 below.Table 17-2: Statistics for Uncapped 2 m Gold Assays - VerdeZone Number Mean Au Std. Dev. Coef. of Minimum Maximumg/tVariationAll 49,789 0.67 0.69 1.03 0 15.941 19,153 1.07 0.80 0.75 0 15.942 15,274 0.56 0.47 0.84 0 10.23 6,908 0.25 0.35 1.39 0 10.63Table 17-3: Statistics for Uncapped 2 m Gold Assays - PanchoZone Number Mean Au Std. Dev. Coef. of Minimum Maximumg/tVariationAll 31,164 0.54 0.66 1.22 0 21.91 8,560 0.97 0.86 0.89 0 21.322 10,796 0.51 0.37 0.72 0 11.953 9,856 0.28 0.53 1.90 0 21.9It should be noted that the coefficients of variation for gold are low reflecting thedisseminated widespread nature of the mineralization.82
Kinross Gold CorporationMaricunga Mine Technical Report17.4.2 Grade cappingCapping of gold values affects 0.2% of the total number of assays at Verde. Grade cappingwas determined based on analysis of the statistics of the three populations created bydividing into the separate grade domains. The levels chosen were 4 g/t Au in the high-gradezone (domain 1) and 2.0 g/t Au in the low-grade zone (domain 2). These capping levelscorrespond respectively to the 99 th percentile and the 98 th percentile. In the material to theperiphery (domain 3) a cap of 1 g/t was selected effectively reducing the grade of approx.2.0% of the samplesSimilar capping levels were selected for the Pancho domains reflecting the similarity in thegrade distributions. The levels chosen were also 4 g/t Au in the high-grade zone (domain 1)and 2.0 g/t Au in the low-grade zone (domain 2). These capping levels correspond to the99 th percentile in both domains. In the material to the periphery (domain 3) a cap of 1 g/t wasselected effectively reducing the grade of approx. 2.5% of the samples.The grade capping was used in combination with restricting the influence of the higher-gradecomposites. (Please see Sections 17.4.4 and 17.4.5 on Gold Grade Interpolation Verde andGold Grade Interpolation Pancho for more details).At Pancho the copper and cyanide soluble copper grades were not capped.17.4.3 Sample CompositingCapped assays were composited to build the resource models for Verde and Pancho. Allgrade interpolation was based on 5 m length composites to account for drill hole deviations.Statistics for the 5 m composites using gold capped assays are presented in Tables 17-4 to17-8. Statistics for copper and cyanide soluble copper are also presented for Pancho.Table 17-4: Statistics for 5 m Gold Composites - VerdeDomain Number Mean Au Std. Dev. Coef. of Minimum Maximumg/tVariationAll 20,577 0.66 0.55 0.84 0 4.001 7,901 1.05 0.58 0.55 0 4.002 15,274 0.56 0.31 0.55 0 10.203 6,908 0.25 0.35 1.39 0 10.6383
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Technical Report for the Maricunga Gold Mine - Kinross Gold

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