Synthesis and infrared spectroscopy of amphiboles along the tremolite-pargasite join
Synthesis and infrared spectroscopy of amphiboles along the tremolite-pargasite join (in Special issue dedicated to the memory of Luciano Ungaretti, Maria Chiara Domeneghetti (prefacer))
European Journal of Mineralogy (April 2003) 15 (2): 341-347
Amphiboles along the tremolite-pargasite join have been hydrothermally synthesized at 900 degrees C, 3 kbar. Under these conditions, there is complete solid solution between tremolite and pargasite and the variation in cell parameters is linear as a function of composition. The IR spectra of the principal OH-stretching region are consistent with predictions on local bond-valence grounds, and show short-range order or cations at the octahedral sites and strong coupling between Al at T(1) and Na at A.