Open-File Report 2007–1292
 
Abstract
Potassium is an emitter of gamma-ray radiation, consequently deposits of potash can be detected and evaluated using gamma-ray logs. A method originally designed to evaluate uranium deposits in boreholes can also be applied to potash deposits. The method equates the depth-integral of a gamma-ray log to the grade-thickness product of a potash-bearing bed or series of beds. The average grade of a bed is then determined by dividing by the overall bed thickness, which can also be obtained from the gamma-ray log. The method was tested using gamma-ray logs and potash assays from boreholes near Carlsbad, New Mexico. |
Version 1.0 Posted October 2007 |
Nelson, Philip H., 2007, Evaluation of potash grade with gamma-ray logs: U.S. Geological Survey Open-File Report 2007-1292, 14 p.
