Adsorption tests were made on four large synthetic and three natural quartz crystals to see if surface defects might be detected by subsequent
autoradiography techniques. The adsorbent used was radioactive Cs137 in a solution of Cs 137Cl. Natural quartz crystals adsorbed more cesium than the synthetic crystals. Certain surface defects were made evident by this method, but twinning features could not be detected.
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Surface adsorption of Cs137 ions on quartz crystals