Technical Report for the Maricunga Gold Mine - Kinross Gold

More documents

Recommendations

Info

Kinross Gold CorporationMaricunga Mine Technical Report12.2 Core DrillingDrill core was received and laid out for logging and sampling at the core logging facility. Thefirst sample of each core hole was marked from the start of core recovery to the end of thefirst even meter. From that point, samples were laid out every 2.0 meters downhole. Samplenumbers were marked on the core box edges, accounting for number gaps for QA/QCsample insertion. Logged and marked boxes of whole core were transferred to the ALSChemex sample preparation facility where chain of custody was transferred from CMM toALS Chemex.CMM received the sawn core, in the original labelled boxes, from ALS Chemex aftersplitting. The half-cores were stored shipping containers at the Maricunga site. In all, tencontainers were used to store the half-core library.Core sample rejects are bagged in plastic, labelled and received from the ALS Chemexsample preparation facility. These bags are placed in cubic meter wooden bins. The binsare labelled according to hole number and sample range. The bins are stored beside thecore containers and are locked in a covered storage compound.The samples are representative of the mineralization intercepted at Pancho. The authorvisited the drill sites at a minimum once a month during the 2006 exploration. The author issatisfied that all established procedures were properly followed by the field staff.12.3 LoggingExperienced geologists logged the reverse circulation chips and drill core at Maricunga.Reverse circulation chips were typically logged at the drill while core was typically logged atthe core logging facility. All logging utilized standardized logging forms and a geologicallegend developed for the Verde and Pancho deposits. The legend has evolved from historicobservation and is consistent with both the regional and local geology. The legend andlogging records lithology, alteration, structure, geology, mineralization and oxidation (ofpyrite) for each two meter sample interval, reducing the geological descriptions to numeric oralphanumeric codes. Unique features not accounted for in the legend are noted in writtencomments. The legend stresses oxidation conditions of pyrite, veinlet mineralization,location and amount of magnetite and occurrence of typical porphyry alteration minerals.46
Kinross Gold CorporationMaricunga Mine Technical ReportIn 2002-2003, Golder Associates from Santiago (Golder) identified all holes requiringdetailed geotechnical logging that was completed by Golder trained staff. CMM geologiststypically recorded both Rock Quality Designation (RQD) and recovery data for each hole.Recoveries averaged better than 95% during the 2003 program. In 2006, average corerecovery was 96%.12.4 Geotechnical Core LoggingGolder managed the geotechnical program. Francisco Carrasco, (Project Manager) andJoaquin Cabello (Assistant Manager) supervised the filed programs and provided the initialtraining. The program included detailed geotechnical logging of selected drill holes, uniaxialcompressive strength (UCS) testing of selected cores, completion of a seven (7) holeoriented core program and cell mapping of existing pit walls and road cuts. Golder alsomanaged a hydrology study including installation of piezometer wells for monitoring waterlevels.Golder provided all initial training and completed frequent site visits to maintain qualitycontrol of the work and upgrade training of the field staff performing the work.CMM adopted identical geotechnical logging procedures in 2006 under the supervision ofthe same geotechnical engineer employed by CMM in 2003.12.5 Composite Sample SummaryThe full composite summary for both Verde and Pancho are shown in Tables 17-4 and 17-5respectively.47
Page 1 and 2: Technical Reportfor theMaricunga Go
Page 4 and 5: Kinross Gold CorporationMaricunga M
Page 96 and 97:
Kinross Gold CorporationMaricunga M
Page 98 and 99:
Page 100 and 101:
Page 102 and 103:
Page 104 and 105:
Page 106 and 107:
Page 108 and 109:
Page 110:
show all

Technical Report for the Maricunga Gold Mine - Kinross Gold

Create successful ePaper yourself

Delete template?

Save as template?