Chemical Analysis of Copper and Gold Ores from Papua New Guinea (PNG) by means of X-ray Fluorescence Analysis

X-ray fluorescence analysis (XRF) has been made for determining the contents of copper and gold in ores from PNG mines. An internal standard method of Cu K α/Er L β_1 was used for the analysis of the common copper porphyry samples. The results clearly indicate that this technique is quite effective for analyzing any copper ores with complicated matrix elements. On the other hand, an addition method of the diluted Au solution was applied to gold ores. The results of the present XRF analysis were found to reasonably agree with those obtained by the inductively coupled plasma (ICP) technique