Analytical Accuracy of Directly Fused Rock Specimen by Electron Probe Microanalyser

Abstract

Analytical technique of whole rock analysis using electron probe on the glass prepared by a direct fusion method, and the result of analyses are reported. Based on the analyses of the Geological Survey of Japan standard rocks, JB-1 and JG-1, accidental and systematic errors are evaluated. For most of the major elements our data show good agreement with the recommended values. And the release of alkalis by vaporization during heating is concluded to be negligible.