Mineralogical analysis of rock dust for remineralization of soil intended for pasture

The objective of this study was to verify the effects rock dust on soil an area destined for pasture. Mineralogical analysis performed using X-ray diffraction, and major oxides minor elements were analyzed fluorescence. samples according PROFERT-MG. following identified from diffractogram total powder: quartz (43.66%), albite (38.10%), microcline (15.30%), muscovite (1.80%). Regarding elements, SiO2 (81.92%), Al2O3 (11.04%), Na2O (3.86%) predominant, important amount K2O (2.61%) present. In chemical characterization soil, increase in levels P, K, Ca, Mg, Sb, t, V, organic matter, carbon observed with addition dust. A comparison results CONAMA quality reference values indicated that sample had acceptable respect all heavy metals. a comparative MAPA's Normative Instruction No. 5/2016, it found does not fully comply minimum requirements legislation. full compliance IN analysis, required content at least 1% K2O. Preliminary studies have application material as remineralizer has potential, mainly relation supply However, physical adjustments are beneficiation process standards.