JXA-8100 microanalyzer: accuracy of analysis of rock-forming minerals

The JXA-8100 microanalyzer software provides precise electron-probe microanalysis of rock-forming minerals, with a relative deviation within 1.0–1.5%, if the matrix effect in the samples is predominantly determined by only one physical factor: either atomic number or absorption. If the matrix effect is of binary character, i.e., is owing to the simultaneous action of two commensurate factors (absorption and atomic number), the analysis error grows up to 4–14%.