Browsing by Subject "resources estimation"

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Ocena dokładności szacowania zasobów kobaltu oraz arsenu w złożu $Cu-Ag$ „Lubin”
(Data obrony: 2017-07-19) Płatanowicz, Filip
Wydział Geologii, Geofizyki i Ochrony Środowiska
The work presents results of study of the accuracy evaluation of cobalt and arsenic resources estimation in the part of $Cu-Ag$ „Lubin” ore deposit. Cobalt and arsenic are representatives of vast group of accompanying elements occurring in copper-silver ore. According to the previous researches, resources estimation of accompanying elements is characterized by low accuracy, which is mostly result of high variability of these elements and low density of the sampling network. In this work, accumulation index of investigated accompanying elements and copper were analyzed with statistical and geostatistical methods. As result of analyses, characteristics of these parameters variability were acquired, which in form of geostatistical models were used in polygonal kriging. Error of estimation of average values of accumulation index of investing elements is equal to the error of resources estimation of these elements within fixed area blocks. Polygonal kriging estimation of average accumulation index of cobalt and arsenic is characterized by multifold lower accuracy of estimation than the estimation of copper. However, in the comparison to results of previous researches concerning other parts of $Cu-Ag$ ore deposit, the estimation of mean values of accumulation index of cobalt and arsenic in the Lubin deposit are more accurate. It is result of less erratic variability of these resources parameters in the field of study.