Examination of cutoff grade parameters in magnesite mineral deposit

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 SiO(2) 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 SiO(2) and CaO% of Beylikova magnesite mineral deposit in Eskisehir, Turkey. After, it was determined that there are mean of SiO(2) and mean of CaO% involves the cutoff SiO(2) 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.