Whole-rock powders and their analysis by an electron mocroprobe technique

Abstract

Basic rock powders finder than 100 mesh were fushed in a molybdenum and tungsten boat in nitrogen atmosphere. The fusion technique uses very small amounts of sample which is suitable for rapid analysisof rock sample, especially of basic composi¬tion. The glasses are fairly momogenous to be suitable for electron mocroprobe analysis. The nomogeneity of the rock glasses was tested by CV values. The accuracy and rapidity of the mocroprobe analyses of the rock glasses allow routine use of such technique. This technique allows major element reconnaissance analyses of rock suites not analyzed before in very short time and withless cost.