Non-destructive analysis of sanukite stones of known source and sanukite implements was carried out by means of energy-dispersive x-ray fluorescence spectrometry. Attention was focussed on areas in middle-western Japan. Stone taken from four source districts was classified into nine different groups. More than a hundred implements obtained from thirty-six archaeological sites were allocated to their sources by means of Hotelling's T₂ test. A republication of 15-1041. -- AATA