Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Luciano Poppi"'
Autor:
Luciano Poppi, Renato Funiciello, Enrico Caprilli, Guido Giordano, Annibale Mottana, Maria Franca Brigatti
Publikováno v:
European Journal of Mineralogy. 17:611-622
This work considers micas present both as phenocrysts in granular xenoliths and as large xenocrysts in the phreatomag-matic deposits, which characterize the final volcanic activity of Colli Albani volcanic complex, Roman Comagmatic Region (central It
Publikováno v:
clays and clay minerals. 53:190-197
The structure of dioctahedral true micas such as muscovite and celadonitic muscovite (2M1 polytype, space group C2/c) is mostly affected by variations of the octahedral Al (VIAl) content. Crystals with greater Mg, Fe substitutions (i.e. celadonitic m
Publikováno v:
Applied clay science
28 (2005): 1–8. doi:10.1016/j.clay.2004.03.006
info:cnr-pdr/source/autori:Brigatti M F; Colonna S; Malferrari D; Medici L; Poppi L/titolo:Mercury adsorption by montmorillonite and vermiculite: a combined XRD, TG-MS, and EXAFS study/doi:10.1016%2Fj.clay.2004.03.006/rivista:Applied clay science (Print)/anno:2005/pagina_da:1/pagina_a:8/intervallo_pagine:1–8/volume:28
28 (2005): 1–8. doi:10.1016/j.clay.2004.03.006
info:cnr-pdr/source/autori:Brigatti M F; Colonna S; Malferrari D; Medici L; Poppi L/titolo:Mercury adsorption by montmorillonite and vermiculite: a combined XRD, TG-MS, and EXAFS study/doi:10.1016%2Fj.clay.2004.03.006/rivista:Applied clay science (Print)/anno:2005/pagina_da:1/pagina_a:8/intervallo_pagine:1–8/volume:28
Synchrotron-based c tended X-ray absorption fine structure spectroscopy (EXAFS). X-ray diffraction at room and high temperature, thermal analyses combined with mass spectrometry of evolved a-as. and chemical analyses contributed to assess the influen
Publikováno v:
European journal of mineralogy
16 (2004): 677–685. doi:10.1127/0935-1221/2004/0016-0677
info:cnr-pdr/source/autori:Brigatti MF; Malferrari D; Medici L; Ottolini L; Poppi L/titolo:Crystal chemistry of apatites from the Tapira carbonatite complex, Brazil./doi:10.1127%2F0935-1221%2F2004%2F0016-0677/rivista:European journal of mineralogy (Print)/anno:2004/pagina_da:677/pagina_a:685/intervallo_pagine:677–685/volume:16
16 (2004): 677–685. doi:10.1127/0935-1221/2004/0016-0677
info:cnr-pdr/source/autori:Brigatti MF; Malferrari D; Medici L; Ottolini L; Poppi L/titolo:Crystal chemistry of apatites from the Tapira carbonatite complex, Brazil./doi:10.1127%2F0935-1221%2F2004%2F0016-0677/rivista:European journal of mineralogy (Print)/anno:2004/pagina_da:677/pagina_a:685/intervallo_pagine:677–685/volume:16
The crystal chemistry of ten hydroxyl fluorapatite crystals from the Tapira alkaline carbonatitic complex (Brazil) was investigated by electron microprobe, ion microprobe, infrared spectroscopy and single crystal X-ray diffraction. Apatite crystals a
Publikováno v:
European Journal of Mineralogy. 15:543-550
The aim of this work is an introductory study on the crystal chemistry of igneous muscovite, with particular focus on samples from the Pedrobernardo pluton (central Spain), whose crystal structure and chemistry is compared with data from the literatu
Publikováno v:
Clays and Clay Minerals. 51:301-308
Single-crystal X-ray diffraction experiments were carried out on roscoelite crystals from Reppia, Val Graveglia, Italy. Roscoelite [structural formula: XII(Ba0.006K0.994)IV(Si3.150Al0.850) VI(Al0.040Fe0.150Mg0.100Mn0.062V1.696Ti0.003)O10(OH)2] shows
Autor:
Luca Medici, Augusto Marcelli, Annibale Mottana, Ermanno Galli, Maria Franca Brigatti, Giannantonio Cibin, Luciano Poppi
Publikováno v:
European Journal of Mineralogy. 13:377-389
To verify chromium enrichment of the muscovite layer, a crystal chemical and XANES study on chromium-containing muscovite crystals from the South Island of New Zealand was carried out. The crystals studied differ from those of end-member muscovite in
Publikováno v:
ResearcherID
Scopus-Elsevier
Scopus-Elsevier
The crystal structure and M-site populations of a series of micas-1 M from miarolitic pegmatites that formed within host granitic rocks of the Precambrian, anorogenic Pikes Peak batholith, central Colorado, were determined by single-crystal X-ray dif
Publikováno v:
Scopus-Elsevier
ResearcherID
ResearcherID
A comparison was made between single-crystal structure refinements, electron microprobe analyses and octahedral site populations of seven biotite crystals and data obtained previously for coexisting muscovite in peraluminous granites using the same m
Publikováno v:
Scopus-Elsevier
This study investigates the complexes formed between amino acids, which are the natural degradation products of organic matter, and smectites. Thus, the adsorption and desorption behavior of cysteine and Na-, Ca-, Cu-homoionic smectites with differen