RT Journal Article
T1 Descripción de la macla de la frondelita-rockbridgeita asociada a las pegmatitas del Macizo de L'Arize, Pirineos (Ariege)
T1 Description of twin in frondelitc -rockbridgeilc ¿issocialed with the pegmatites of the L'Arize Massif (Pirinees, Ariege)
A1 Fontan, F.
A1 Roda, E.
AB A cruciform intergrowth in a phosphate of the frondelite-rockbrid geite series associated with beryl-columbite pegmatites is studied on the basis of geometric considerations. The crystallographical calculations prove, for the first time, the existence of a reticular pseudomeroedric twinning in frondelite, having as twin plane the (041), an obliquity of ~ 3 and a twin index ~ 7, which may explain the rarity of this twinning
PB Sociedad Geológica de España
YR 1996
FD 1996
LK http://hdl.handle.net/10272/13151
UL http://hdl.handle.net/10272/13151
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026