@article{10272/13151,
year = {1996},
url = {http://hdl.handle.net/10272/13151},
abstract = {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},
publisher = {Sociedad Geológica de España},
title = {Descripción de la macla de la frondelita-rockbridgeita asociada a las pegmatitas del Macizo de L'Arize, Pirineos (Ariege)},
title = {Description of twin in frondelitc -rockbridgeilc ¿issocialed with the pegmatites of the L'Arize Massif (Pirinees, Ariege)},
author = {Fontan, F. and Roda, E.},
}