Comparison between K and alpha sampling constants with the Pierre Gy’s factors for bauxite

Sampling is an important tool for gathering information about mineral deposits, helping to estimate the ore grade, and has great relevance at any stage of a mining project, ensure reliable results consequently, project better planning. There are several errors which sampling exposed among them we can mention fundamental error (FSE). This cannot become zero as it related constitutional heterogeneity ore, so represents minimum error. study applies Pierre Gy’s theory (TOS) values K α constants different deposits bauxite in Brazil compare with calculated factors, then calculate relative standard deviation s(FSE) based on test (HT) each deposit. The located in: Barro Alto - State Goiás, Juruti Pará, Poços de Caldas Minas Gerais. weathering process main reason alteration physical chemical factors diversifying bauxites worldwide. However, when carried out correctly, formula becomes powerful improving processes long estimated correctly ore.