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Description of twin in frondelitc -rockbridgeilc ¿issocialed with the pegmatites of the L'Arize Massif (Pirinees, Ariege)

dc.contributor.authorFontan, F.
dc.contributor.authorRoda, E.
dc.description.abstractA 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 twinningen_US
dc.publisherSociedad Geológica de Españaen_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherReticular pseudo-merohedriSmen_US
dc.titleDescripción de la macla de la frondelita-rockbridgeita asociada a las pegmatitas del Macizo de L'Arize, Pirineos (Ariege)en_US
dc.titleDescription of twin in frondelitc -rockbridgeilc ¿issocialed with the pegmatites of the L'Arize Massif (Pirinees, Ariege)eng

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Atribución-NoComercial-SinDerivadas 3.0 España
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