Raspodela Al_2O_3, Fe_2O_3 i SiO_2 u boksitima Mačkata

摘要

U ovom radu se prikazuju rezultati geohemijskih ispitivanja raspodele oksida aluminijuma, gvozda i silicijuma kao glavnih rudnih i jalovinskih komponenata u boksitima rudnog polja Mačkat u Zapadnoj Srbiji. Primenjenaje statistička metoda ispitivanja raspodele ovih oksida po sopstvenim koncentracijama, koju drugi autor razvija preko tri decenije. Autori su resili da svestrano ispitaju sve aspekte statističkih raspodela ovih glavnih i drugih oksida i elemenata, jer su ovi boksiti pogodni za to, pošto ima obilje podataka koji su sakupljeni višegodišnjim istraživanjima prvog autora.%The geological population of Al_2O_3, Fe_2O_3 and SiO_2 is represented by two partial statistical samples: "Bauxite" (N=139), and "Clay bauxite" (N=90) and one collective statistical sample "Bauxite of Mackat" (N=229). Here the original statistical method based upon the principle of "Dual nature of geological random variable". The Al_2O_3 distribution is symmetrical in "Bauxite" with mean content 39,96% (21,15% Al), in "Clay bauxite" is right-asymmetrical with mean content 24,47% (12,95% Al), in "Bauxite of the Mackat" is right-asymmetrical with mean content 33,87% (17,93% Al); is higher then the clarke value (after Vinogrdov, 1962 and B eus, 1981). The Fe_2O_3 distribution is left-asymmetrical in "Bauxite" with mean content 33,46% (23, 41%) Fe), in "Clay bauxite" is left-asymmetrical with mean content 18,26% (12,77% Fe), in "Bauxite of the Mackat" is right-asymmetrical with mean content 27,49% (19,23% Fe); is higher then the clarke value. The SiO_2 distribution is left-asymmetrical in "Bauxite" with mean content 12,19% (5,70%) Si), in "Clay bauxite" is left-asymmetrical with mean content 40,88% (19,12%) Si), in "Bauxite of the Mackat" is left-asymmetrical with mean content 23,47% (10,97% Si); is lower then the clarke value. The correlative of Al_2O_3 and Fe_2O_3 is positive, and SiO_2 is negative.