 | | Journal (article/letter/editorial) | | Springer-Verlag 1999 Gaston Godard á David Smith Preiswerkite and Na-(Mg,Fe)-margarite in eclogites Received:...April 1998 / Accepted: 25 January 1999 Abstract Preiswerkite and Na-(Mg,Fe)-margarite are two unusual micas...observed together in two eclogite occurrences (La Compointrie, France; Liset, Norway) as retrogression products...Laboratoire de PeÂtrologie MeÂtamorphique, Tour 26-00 Etage 3, 4 Place Jussieu, F-75252 Paris, France; E-mail:...d'Histoire Naturelle, Laboratoire de MineÂralogie, 61 Rue Bu€on, F-75005 Paris, France; E-mail: smith@mnhn.fr Editorial |  | Oberti, Roberta, Ungaretti, Luciano, Tlili, Ali, Smith, David C., Robert, Jean-louis (1993) The crystal structure of preiswerkite. American Mineralogist, 78 (11-12) 1290-1298 | Journal (article/letter/editorial) | | structure of preiswerkite Ronnnu Onrcnrr, LucHNo lJNcanrrrr CNR-Centro di Studio per la Cristallochimica...Cristallochimica e la Cristallografra,via Bassi 4,1-27IOO Pavia, Italy Ar,r Tr,rr,r, D.lvro C. Srvrrrn Mus6um National...Laboratoire de Min6ralogie, 6l rue Butron, F-75005 Paris, France Jr.qs-Lours RoBERT CNRS-Centre de Recherchessur...Recherchessur la Synthdseet la Chimie des Min6raux, la rue de la Ferollerie, F-45071 Orl6ans Cedex 2. France Ansrnlcr...Ansrnlcr The structure of preiswerkite,ideally Na(MgrAlXSirAlr)O,o(OH)r, from the type locality at Geisspfad |  | | Journal (article/letter/editorial) | | taramitic amphibole, (c1ino)zoisite f nepheline and preiswerkite. This alteration reflects depressurization f...fault, the San Agustin Fault (see Fig. 1). The Sierra de las Minas, the northern boundary of the Motagua Valley...m in diameter) in some streams, particularly Rio La Palmilla. JADElTlTES A N D ALBITITES FROM GUATEMALA...Blocks of jadeitite equivalent to those found in Rio La Palmilla occur at MVJ84-9 & -51. In weathered, ochre-earthed...of the study area, and the other is closer to Rio La Palmilla (RLP; Fig. 1). Mzl jadeitites are generally |  | | Journal (article/letter/editorial) | | metasomatic/metamorphic fluids inferred from preiswerkite in chromitite pods of the Khoy ophiolite in...metasomatic/metamorphic fluids inferred from preiswerkite in chromitite pods of the Khoy ophiolite in...metasomatic/metamorphic fluids inferred from preiswerkite in chromitite pods of the Khoy ophiolite in...+98-912-1044903 We report a new occurrence of preiswerkite, a rare Na- and Al-rich trioctahedral mica (Naanalogue...Khoy meta-ophiolite in northwestern Iran. The preiswerkite is euhedral and associated with Ca– Cr–Al-garnet |
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