Technical Report for the Maricunga Gold Mine - Kinross Gold

More documents

Recommendations

Info

Kinross Gold CorporationMaricunga Mine Technical Report16.1 Metallurgical Test Work 200316.1.1 Cyanide Soluble AssaysBoth gold and copper cyanide soluble analyses were routinely analyzed for Verde andPancho. Results were used to guide selection of samples for bottle roll and column leachtests. Cyanide copper analyses were also used to adjust process operating costs during pitoptimization of the resource model for Pancho. The mechanics of the Process CostAdjustment Factor (PCAF) are discussed elsewhere in this report.16.1.2 Direct Agitated Cyanidation (Bottle Roll) TestsBottle roll composite samples were selected from the half core library based on lithology,oxidation state, grade and spatial location. A total of 43 bottle roll samples were selectedfrom the Verde with an additional 15 samples collected from Pancho. The samples wereshipped to McClelland Laboratories, Nevada for testing.The gold grade selection criteria used for selection of the bottle roll tests were:• Low grade 0.50 to 0.75 g/t• Mid-grade 0.75 to 1.00 g/t and• High grade >1.0 g/tOxidation state was determined based on the visual logging of oxidation noted in thegeological logs. Three distinct oxidation levels were defined.• Oxide >90% oxidation of sulphide• Mixed between 10% and 90% oxidation of sulphides and• Sulphide
Kinross Gold CorporationMaricunga Mine Technical ReportSample selection was restricted within an optimized pit shell generated at a US $400 goldprice. Table 16-1 summarizes the Bottle Roll sample selection.Results of the bottle roll tests show distinct differences in recovery based on the level ofoxidation. Oxide ores exhibit higher recoveries than mixed ores which, in turn, demonstratehigher recoveries than the sulphide ores. These findings agreed with the historicalmetallurgical test work and experience gained from mining in the Verde area. A summary ofthe bottle roll test results is presented in Table 16-2.Table 16-1: Summary of Bottle Roll Sample SelectionGold GradeLow Medium HighDeposit (0.50 - 0.75) (0.75-1.00) (>1.00 g/t)Pancho # of samples 5 5 5Verde W # of samples 5 5 11Verde E # of samples 9 5 10OxidationOxide Mixed SulphideDeposit (>90%) (10-90%) (
Page 1 and 2:
Technical Reportfor theMaricunga Go
Page 4 and 5:
Kinross Gold CorporationMaricunga M
Page 6 and 7:
Page 8 and 9:
Page 10 and 11: Kinross Gold CorporationMaricunga M
Page 110:
show all

Technical Report for the Maricunga Gold Mine - Kinross Gold

Create successful ePaper yourself

Delete template?

Save as template?