Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Pier Francesco Zanazzi"'
Publikováno v:
Contributions to Mineralogy and Petrology. 162:275-288
Clinopyroxene phenocrysts from the mafic calc-alkaline lavas of Salina (Aeolian arc, southern Tyrrhenian Sea, Italy) have been analysed to determine the hydrogen content and iron oxidation state of this early crystallized phase. The volcanic activity
Autor:
C. Capalbo, Paola Comodi, T. Boffa Ballaran, Pier Francesco Zanazzi, A. Zanetti, Sabrina Nazzareni
Publikováno v:
The American mineralogist 95 (2010): 1042–1051. doi:10.2138/am.2010.3429
info:cnr-pdr/source/autori:Comodi P.; Boffa Ballaran T.; Zanazzi P.; Capalbo C.; Zanetti A.; Nazzareni S./titolo:The effect of oxo-component on the high-pressure behavior of amphiboles./doi:10.2138%2Fam.2010.3429/rivista:The American mineralogist/anno:2010/pagina_da:1042/pagina_a:1051/intervallo_pagine:1042–1051/volume:95
info:cnr-pdr/source/autori:Comodi P.; Boffa Ballaran T.; Zanazzi P.; Capalbo C.; Zanetti A.; Nazzareni S./titolo:The effect of oxo-component on the high-pressure behavior of amphiboles./doi:10.2138%2Fam.2010.3429/rivista:The American mineralogist/anno:2010/pagina_da:1042/pagina_a:1051/intervallo_pagine:1042–1051/volume:95
The role of the oxo-component on the compressibility of amphibole was studied by means of high-pressure in situ single-crystal X-ray diffraction on two natural kaersutite megacrysts (samples DL5 and FR12) from alkaline basalts. The oxo-component vari
Publikováno v:
American Mineralogist. 94:352-358
An in-situ, high-pressure, single-crystal X-ray diffraction study has been carried out at room temperature up to 7.42 GPa on a crystal of ingersonite, ideally Ca 3 Mn 2+ Sb 4 5+ O 14 , from the type material. Ingersonite is isostructural with the syn
Autor:
Nicola Rotiroti, Milan Drábek, Pier Francesco Zanazzi, G. Diego Gatta, M. Rieder, R. Klaska, Zdeněk Weiss
Publikováno v:
American Mineralogist. 93:988-995
Crystalline CsAlSiO 4 was synthesized from a stoichiometric mixture of Al 2 O 3 + SiO 2 + Cs 2 O (plus excess water) in Ag-capsules at hydrostatic pressure of 0.1 GPa and temperature of 695 °C. The duration of synthesis was 46 h. The crystal structu
Publikováno v:
American Mineralogist. 90:1012-1016
Here we report the results of the first three-dimensional refinement of the 10 A phase performed with single-crystal X-ray data. The 10 A phase, Mg3Si4O10(OH)2H2O, is monoclinic, space group C 2/ m , a = 5.323(1)A, b = 9.203(1)A, c = 10.216(1)A, β =
Publikováno v:
American Mineralogist. 90:645-652
Elastic behavior and high-pressure (HP) structural evolution of a natural zeolite levyne, (Ca 0.5 ,Na,K) 6 (Al 6 Si 12 O 36 )·18H 2 O, has been investigated up to 5 GPa by means of in situ single-crystal X-ray diffraction with a diamond-anvil cell u
Autor:
Francesco P. Sassi, Charles V. Guidotti, James G. Blencoe, Pier Francesco Zanazzi, Paola Comodi
Publikováno v:
Scopus-Elsevier
Plusieurs chercheurs se sont penches sur les mecanismes de transformation d'un shale en ardoise, furent-ils mecaniques, physiques ou chimiques. Nous considerons ici certains aspects qui ont echappe aux auteursanterieurs. Plus precisement, nous evaluo
Publikováno v:
Scopus-Elsevier
The structural behavior of phlogopite was studied by in situ single-crystal X-ray diffraction (XRD) in a diamond-anvil cell, using crystals of composition [(K0.91Na0.02Ba0.03) (Fe2+ 0.65Fe3+ 0.163Al0.123Mg1.81 Ti0.149)Si2.708Al1.292O10OH1.725F0.175].
Publikováno v:
Contributions to Mineralogy and Petrology. 145:578-584
Optically homogeneous augite xenocrysts, closely associated with spinel–peridotite nodules, occur in alkali basalts from Hannuoba (Hebei province, China). They were studied by electron and X-ray diffraction to define the occurrence and significance
Publikováno v:
European Journal of Mineralogy. 15:247-255
The structural behaviour of bikitaite, Li 2 (Al 2 Si 4 O 12 ). 2H 2 O, was investigated under hydrostatic pressure using X-ray single-crystal diffraction data. A Merrill-Bassett diamond anvil cell was mounted with glycerol, as non penetrating pressur