ارزيابي نمونه برداري از گمانه منطقه اكتشافي اورانيوم خشومي به روش زمين آماري

Evaluation of Sampling from Borehole of Khoshomi Uranium Exploration Area with Geostatistics

The goal of this study is to evaluate the core sampling intervals of the boreholes drilled in the Khoshomi uranium exploration area, located in the central part of Iran. According to the geochemical data analysis, a question has been arisen that whether the selected intervals could give us a reliable quantitative and qualitative information throughout the borehole within a minimum possible error. For giving an answer to this question, the geostatistics method has been applied. For applying the method, initially various variograms for the low and high grade zones have been obtained. Regarding to our experimental variograms, they were fitted to a spherical variogram. By the use of Jack-knife kriging and the related statistics the validity of parameters of the spherical model have been examined. In the present study, it has been concluded that the effective radius of the variograms are more than sampling interval and this interval is considered to be suitable and even it could be selected more than the one appeared in the above study.