Absence of Neutral Alkali Atoms in Rhodizite

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Science  18 Nov 1966:
Vol. 154, Issue 3751, pp. 889-890
DOI: 10.1126/science.154.3751.889


The formula CsBl2Be4Al4O28 has been proposed by others for the mineral rhodizite. Electron-spin-resonance and magnetic susceptibility measurements prove the absence of neutral cesium atoms. An ionic formula CsB11Be4Al4O26(OH)2 is proposed.