gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1980.043.331.11 A Re-examination of Cheralite Bowles J. F. W. Institute of Geological Sciences, 64-78 Gray's Inn Road, London WC1X 8NG Jobbins E. A. Young B. R. Institute of Geological Sciences, Exhibition Road, London SW7 2DE 9 1980 43 331 885 888 29 1 1980 Copyright © 1980, The Mineralogical Society 1980 Summary

A new analysis of the type material of cheralite specifies the individual rare earth elements. Unit cell contents are: (REE1.58Th1.15Ca1.03Pb0.05U0.15)3.96 (P3.67Si0.33)4.01O16. Refinement of the cell parameters based on new XRD data shows that a = 6.7515 ± 0,0005 Å, b = 6.9625 ± 0.0005, c = 6.468 ± 0.0005, β = 103° 53′, giving a cell volume of 295.2 Å3. Space group P21/n.