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X-ray spectrographic analysis is applied to the analysis of one milligram aliquots of mineral samples. Investigation of the sulpho-salt family of minerals indicated a need for non-destructive analysis of minute quantities of mineral samples usually available for study. Thus the X-ray spectrograph method offered a likely possibility.
The apparatus used in the spectrographic analysis consisted of a Norelco generator, a vacuum sample container (in which the sample is inverted), and circuit panel equipped with a scintillation counter and pulse height analyzer.
Standardization was achieved by analysis of 100 milligram aliquots of selected mineral samples using the fusion technique. The samples were fused in 100:1 ratio of potassium pyrosulphate and the intensity ratios of the elements compared with those obtained from artificial standards to give the atomic ratios. Working curves were then prepared from finely ground 1 milligram aliquots of the analyzed minerals.
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