Abstract
One important critical value in mineral deposits is cutoff grade. The cutoff grade is defined as the value which discriminates between ore and waste with a given mineral deposit. In this study, the cutoff grade parameters such as SiO2 and CaO% are examined by statistical distribution model. This paper shows a procedure for using the bivariate lognormal statistical distribution model with two uncorrelated samples to describe the SiO2 and CaO % of Beylikova magnesite mineral deposit in Eskisehir, Turkey. After, it was determined that there are mean of SiO2 and mean of CaO% involves the cutoff SiO2 and cutoff CaO%, respectively. Finally, the bivariate lognormal distribution model with two uncorrelated samples is help to analysis in the cutoff grade parameters of mineral deposits. Key words: Cutoff grade parameters, statistical distribution, magnesite, Turkey.
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