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Several important characteristics such as suitable parent rocks, hydrodynamics system for carrying uranium complexes and pervious sedimentary layers play key role for transportation and deposition of soluble uranium. In this paper, we present the results of investigations of parent rocks and host rock of sedimentary uranium in Razgah region to examine intrusive of nepheline syenite in Razgah together with surrounding sedimentary units with regard of sedimentary uranium mineralization. Razgah nepheline syenite loca...

In geochemical stream sediment surveys in Moghangegh Region in NW of Iran, sheet 1:50,000, 152 samples were collected and after analyze and processing of data, it is revealed that Yb, Sc, Ni, Li, Eu, Cd, Co, As contents in one sample is far higher than other samples. After detecting this sample as the outlier sample, affect of this sample was investigated in multivariate statistical data processing to investigate destructive effects of outlier sample existence in geochemical exploration. Pearson and spearman corre...