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Topographic effect to the prediction of nickel deposit

La Ode Ngkoimani, and Edi Cahyono
Predicting nickel ore content inside the soil under a given area/region is considered. This is very important for exploitation activity from economic point of view. So far, the prediction is based on the data from the drilling activity at several „points‟ which yield information of the nickel concentration at every point. Current methods applied in industries only provide nickel concentration in the whole region. Moreover, in drilling activity the effect of topographic surface does not taken into account. This paper discusses the prediction of total nickel content in the whole region by considering the topographic surface. The total content is approximated by integral of the nickel concentration over the surface. Whereas the nickel concentration under the surface is approximated by applying linear interpolation of the data obtained from drilling. The total nickel content in the whole region is more desirable for deciding exploitation activity from economic point of view. An example of the effect of surface topography which gives an error in prediction is also presented. Keywords—Interpolation, nickel ore, nickel deposit, prediction, topographic surface.

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Diterbitkan pada: International Journal of Geology Vol. 8, Th. 2014, hal. 69 – 72. Naun, Amerika Serikat

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