gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1966.035.274.01 Rare Earths in the Aeschynite-Priorite Series. The Status of Lyndochite1 Fleischer Michael U.S. Geological Survey, Washington, D.C., U.S.A.

Publication authorized by the Director, U.S. Geological Survey.

 6 1966 35 274 801 809 22 11 1965 Copyright © 1966, The Mineralogical Society 1966 Summary

Data on the contents of individual rare earths are summarized for 24 members of the aeschynite-priorite series and 3 lyndochites. It is shown that the data are in accord with the assignment of lyndochite to the aeschynite-priorite series. The available X-ray data are not definitive, but indicate at least strong similarity of lyndochite to aeschynite ; the classification of lyndochite as a variety of euxenite is excluded.