3D Modeling and Resources Estimation of a Gold Deposit, Zhungarie Province, Kazakhstan

Z. Tungyshbayeva1 and Jean-Jacques Royer and T. M. Zhautikov. ( 2015 )
in: Proceedings of the 13th Biennal SGA Meeting, SGA, pages 1759-1761

Abstract

Drill holes analyzed in gold by the Altyn Ken Company, geological cross sections, mine plans, and sampled grade values digitalized from old drill holes, were used to estimate resources of a gold deposit (ore body), located in the Zhungarie Province, SE Kazakhstan. Gold concentrations were estimated from drill holes at the center of regular grid blocks (> 550,000 cells of 15m3 each) using the gOcad DSI (Discrete Smooth Interpolation). 3D views of the ore body are in agreement with a steeply dipping NW 60-70 quartz vein type deposit. Variograms indicated a high spatial variability of gold (nugget effect). Reserve estimations lead to proved crude ore reserves of 320kt@3.1± 1.2 Au g/t Au fixing cutoff at 2g/t Au, yielding 1.00± 0.38 t gold and 11.5± 4.4 t silver; from geophysics data, potential reserves in the SW are estimated at 1.5t gold and 17.3 t silver. The total (proved + potential) is at 800 kt of crude ore at 3.1± 1.2 Au g/t Au for cutoff at 2g/t Au representing 2.5 t of gold and 29 t of silver. Given gold and silver prices at 1,400$/oz Au and 24$/oz Ag respectively, the in situ value of the deposit is estimated at 93±38M$.

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    BibTeX Reference

    @INPROCEEDINGS{Tungyshbayeva:2015,
        author = { Tungyshbayeva1, Z. and Royer, Jean-Jacques and Zhautikov, T. M. },
        editor = { SGA },
         title = { 3D Modeling and Resources Estimation of a Gold Deposit, Zhungarie Province, Kazakhstan },
         month = { "aug" },
     booktitle = { Proceedings of the 13th Biennal SGA Meeting },
        series = { Symposium B },
        volume = { 5 },
          year = { 2015 },
         pages = { 1759-1761 },
    organization = { SGA },
       address = { Nancy, France },
      abstract = { Drill holes analyzed in gold by the Altyn Ken Company, geological cross sections, mine plans, and sampled grade values digitalized from old drill holes, were used to estimate resources of a gold deposit (ore body), located in the Zhungarie Province, SE Kazakhstan. Gold concentrations were estimated from drill holes at the center of regular grid blocks (> 550,000 cells of 15m3 each) using the gOcad DSI (Discrete Smooth Interpolation). 3D views of the ore body are in agreement with a steeply dipping NW 60-70 quartz vein type deposit. Variograms indicated a high spatial variability of gold (nugget effect). Reserve estimations lead to proved crude ore reserves of 320kt@3.1± 1.2 Au g/t Au fixing cutoff at 2g/t Au, yielding 1.00± 0.38 t gold and 11.5± 4.4 t silver; from geophysics data, potential reserves in the SW are estimated at 1.5t gold and 17.3 t silver. The total (proved + potential) is at 800 kt of crude ore at 3.1± 1.2 Au g/t Au for cutoff at 2g/t Au representing 2.5 t of gold and 29 t of silver. Given gold and silver prices at 1,400$/oz Au and 24$/oz Ag respectively, the in situ value of the deposit is estimated at 93±38M$. }
    }