Browsing by Author "Camara F."
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Browsing by Author "Camara F."
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Iezzi G.; Ventura G.D.; Camara F.; Pedrazzi G.; Robert J.L. (2003)Amphiboles were hydrothermally synthesized at 500 8C and 4 kbar in the system Li2O-Na2O-FeO- Fe2O3-SiO2-H2O, with nominal compositions along the riebeckite [¦ Na2Fe3 2+ Fe2 3+ Si8O22(OH)2]-ferri-clinoferroholmquistite [¦ ...
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Camara F.; Carpenter M.A.; Domeneghetti M.Ch.; Tazzoli V. (2003)A Landau potential with linear-quadratic coupling has been developed to describe interactions between a non-convergent order parameter, QOD, for Fe/Mg ordering, and the order parameter, QD, for the C2/c-P21/c phase transition ...
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Camara F.; Iezzi G.; Oberti R. (2003)Ferrian magnesian spodumene was synthesized in the MLFSH system at P=0.4 GPa, T=700 °C, fO2=NNO+2.3. The space group at room T is P21/c [a=9.638(3) A, b=8.709(2) A, c=5.258(2) A, β=109.83(3)°, V=415.2 A3]. The structure ...
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Camara F.; Doukhan J.C.; Carpenter M.A. (2001)Lattice defects in lawsonite have been studied by transmission electron microscopy. It is proposed that twinning and easy glide systems are 1/2[110].{110}; the easy glide planes are coincident with twin planes. This mineral ...
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Camara F.; Carpenter M.A.; Domeneghetti M.C.; Tazzoli V. (2002)A natural Ca-rich pigeonite (En47Fs43Wo10), free of augite exsolution products, was studied by in situ high-temperature single-crystal X-ray diffraction. The sample, monoclinic P21/c (a=9.719(7) A, b=8.947(9) A, c=5.251(3) ...
Now showing items 1-5 of 5