%0 Journal Article %T Synthesis and infrared spectroscopy of amphiboles along the tremolite-pargasite join. %+ Dipartimento di Scienze Geologiche [Roma TRE] %+ Department of Geological Sciences (DEPARTMENT OF GEOLOGICAL SCIENCES) %+ Institut des Sciences de la Terre d'Orléans (ISTO) %+ Bayerisches Geoinstitut (BGI) %A Della Ventura, Giancarlo %A C. Hawthorne, Franck %A Robert, Jean-Louis %A Iezzi, Gianluca %< avec comité de lecture %@ 0935-1221 %J European Journal of Mineralogy %I Copernicus %V 15 %P 341-347 %8 2003 %D 2003 %R 10.1127/0935-1221/2003/0015-0341 %Z Sciences of the Universe [physics]/Earth Sciences/MineralogyJournal articles %X Amphiboles along the tremolite-pargasite join have been hydrothermally synthesized at 900°C, 3 kbar. Run products were characterized by optical and electron microscopy, powder X-ray diffraction and infrared spectroscopy. Under the experimental conditions used, there is complete solid-solution between tremolite and pargasite and the variation of cell parameters is linear as a function of composition. The infrared spectra in the principal OH-stretching region are consistent with the predictions of Hawthorne (1997) on local bond-valence grounds, and show strong short-range order of cations at the octahedral sites and strong coupling between Al at T(1) and Na at A. %G English %L hal-00069365 %U https://insu.hal.science/hal-00069365 %~ INSU %~ CNRS %~ UNIV-ORLEANS %~ ISTO %~ OSUC %~ GIP-BE