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Campostrini, Italo
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Campostrini, Italo
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- PublicationRestrictedLeonardsenite del Vesuvio (secondo ritrovamento mondiale)(2013)
; ; ; ;Campostrini, I.; Dipartimento di Chimica - Univerità di Milano ;Demartin, F.; Dipartimento di Chimica - Univerità di Milano ;Russo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; ; As a part of the scientific agreement between the Dipartimento di Chimica - Università degli Studi di Milano and the Osservatorio Vesuviano (Napoli), the content of the bottles belonging to the historical collection of the Osservatorio, most of them collected before the 1944 eruption, was examined. The study allowed to identify several new phases, among which the recently described d’ansite-(Mn). In samples collected by A. Malladra in 1920, leonardsenite, MgAlF5(H2O)2, was identified. The mineral occurs as minute colorless prismatic crystals, wit maximum size of about 100 microns. The identification was obtained by single-crystal X-ray diffraction. The unit-cell data are: a 7.083(3); b 10.155(4); c 6.816(3) Å. This is the second discovery in the world.195 29 - PublicationRestrictedI minerali di origine fumarolica dei Campi Flegrei : Solfatara di Pozzuoli (Napoli) e dintorniL'area dei Campi Flegrei situata a nord della città di Napoli è caratterizzata da un vulcanismo che si è esplicato negli ultimi 80.000 anni sia con potenti eruzioni altamente esplosive (tanto da farlo definire un super vulcano)....
475 99 - PublicationRestrictedKottenheimite,Ca3Si(SO4)2(OH)6 .12H2 0, della cava Montenero di Onano (Viterbo,Lazio): secondo ritrovamento mondialeNella Cava di Montenero di Onano, sita nel bacino di Latera in provincia di Viterbo(Lazio), è stata rinvenuta in un proietto lavico una rara specie in ottime cristallizzazioni: la kottenheimite...
147 28 - PublicationOpen AccessRitrovamento di Atacamite in cristalli al Vesuvio(2011)
; ; ; ;Russo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Campostrini, I.; Dipartimento di Chimica Strutturale ;Castellano, F.; Caserta; ; In the small vacuoles of an older lava from one of the quarries of Villa Inglese (Torre del Greco, Napoli) atacamite as crystalline have been discovered. This is a rare event in this volcanic complex.162 285 - PublicationOpen AccessAMMINEITE, MATLOCKITE AND POST 1944 ERUPTION FUMAROLIC MINERALS AT VESUVIUS(2011-09-19)
; ; ;Russo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Campostrini, I.; Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano; The 1944 eruption of Vesuvius began on March 18th and ended on the 29th of the same month. It was the last eruption of Vesuvius and marked the transition from an open conduit to a closed conduit state. The eruption took place during wartime so that nobody was interested to sample fumarolic minerals before and after the eruption. The only mineralogical work was made by Parascandola (1951), but most interesting were his comments on the temperature of the fumaroles and his observations about fumarolic minerals in the period between 1947 and 1960. Parascandola indicated the presence of about ten mineral species found on the fumaroles....244 263 - PublicationOpen AccessSbacchiite, Ca2AlF7, a new fumarolic mineral from the Vesuvius volcano, Napoli, ItalyThe new mineral sbacchiite (IMA 2017-097), Ca2AlF7, was found in a fossil fumarole (1944 eruption, T ! 80 !C) at the rim of the crater of the Vesuvius volcano, Napoli, Italy, associated with gearsksutite, usovite, creedite and opal. It forms elongated crystals up to about 60 lm in length. On the basis of powder X-ray diffraction data and chemical analysis, the mineral was recognized to be identical to the corresponding synthetic phase. Crystals are transparent or translucent and colourless, with vitreous lustre and white streak. The tenacity is brittle. The measured density is 3.08(2) g/cm3, the calculated density is 3.116 g/cm3. The empirical formula, (based on 10 atoms per formula unit, apfu) is Ca2.02Mg0.03Al0.99F6.97. Sbacchiite is orthorhombic, space group Pnma, with a = 7.665(2), b = 6.993(1), c = 9.566(2) Å, V = 512.2(2) Å3 and Z = 4. The eight strongest X-ray powder diffraction lines are [dobs Å(I)(hkl)]: 3.840(45)(200), 3.563(85)(201), 3.499(100)(020), 2.899(55)(013), 2.750(30)(212), 2.281(20)(104), 2.255(52)(302) and 2.173(36)(131). The structure was refined to R = 0.0479 for 457 reflections with I > 2r(I). The asymmetric unit contains one Al3+ and two independent Ca2+ cations and five fluorine anions. Aluminium is octahedrally coordinated by six fluorine atoms; the arrangement of F around the 7-coordinated Ca(1) conforms to a distorted pentagonal bipyramid and that around Ca(2) to a very distorted polyhedron (in 7 + 1 coordination). All the fluorine atoms are threefold coordinated. The structure framework shows ‘‘isolated’’ [AlF6] octahedra, whereas the coordination polyhedra around Ca are linked by common edges [sequence: Ca(1)–Ca(2)– Ca(1). . .] along [010] and the same holds for the connection along [001]. Along [100], however, only the pentagonal bipyramids around Ca(1) are connected by bridging corners.
72 77 - PublicationOpen AccessNEW MINERAL SPECIES FROM VULCANO, AEOLIAN ISLANDS, SICILY, ITALY(2011-09)
; ; ; ; ;Campostrini, I.; Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano ;Demartin, F.; Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano ;Gramaccioli, C.M.; Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano ;Russo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; ; ; Since 2006 Vulcano Island was the object of a joint project concerning the study of fumarole minerals of Italian volcanoes, carried out in collaboration with Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Napoli - Osservatorio Vesuviano. At present, the mineral species found at Vulcano are over 100; the island is the type locality for 23 species, 17 of which were discovered by us, and it is the unique occurrence for 20 of them. Besides the already IMA-approved “official” species, there are at least 38 potentially new minerals currently under examination. By far the main occurrence for these minerals are the fumaroles located...148 101 - PublicationOpen AccessStoria termica di una fumarola del Vesuvio (Campania, Italy) attraverso lo studio di minerali presenti su di un microcampione(2008)
; ; ;Russo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Campostrini, I.; 2Dipartimento di Chimica Strutturale e Stereochimica Inorganica, Università di Milano; Alava scoria sample rich in crystals, from a fumarole of the 1906 eruption, has been examined in the present work. The analyses of the sample were performed by an EDS-equipped scanning electron microscope which made possible to identify galena, sphalerite, challacolloite and gypsum; these minerals can be considered as temperature-markers. At first the fumarole was in high temperature conditions (higher than 650°C and however not lower than 400-300°C) with deposition of galena and sphalerite. When temperature decreased a film of challacolloite (KPb2Cl5) was formed and coated the existing minerals. Finally, after a sudden drop in temperature gypsum was formed. These findings are in agreement with the formation of galena and sphalerite into silica tubes placed in fumaroles of others volcanoes, according the methodology proposed by [Le Guern e Bernard, 1982].235 535 - PublicationOpen AccessNuove specie minerali al Somma-Vesuvio: fluoro-edenite(2009)
; ; ; ; ;Russo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Della Ventura, G.; Dipartimento di Scienze Geologiche Università Roma Tre ;Campostrini, I.; Dipartimento di Chimica Strutturale e Stereochimica Inorganica Università di Milano ;Preite, D.; via Piave, 16 I-20024 Garbagnate (Milano); ; ; Despite the impossibility to make mineralogical researches on the field, the volcanic complex of Monte Somma-Vesuvius keeps surprising with new findings of mineral species for that locality. In an “old” sample belonging to Domenico Preite, picked up at Le Novelle quarry, Ercolano, Napoli, thanks to EDX and micro- FTIR analysis the fluoro-edenite was identified. This is the second Italian finding for the species after the one of the Etnean type locality of Monte Calvario, Biancavilla, Catania (Gianfagna & Oberti, 2001).260 231 - PublicationRestrictedPrima segnalazione di sfalerite nelle fumarole del Vesuvio(2008)
; ; ; ; ; ;Russo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Campostrini, I.; Dipartimento di Chimica Strutturale ;Blass, G.; Merzbachstrasse 6, ;Schafer, C.; VFMG-Vereinigung der Freunde der ;Ciriotti, M. E.; via San Pietro, 55; ; ; ; Il Somma-Vesuvio è un’area di elevato interesse mineralogico; si tratta di uno strato-vulcano, nella cui caldera (Monte Somma) si è formato il Gran Cono del Vesuvio. Questo vulcano è stato di recente oggetto di una approfondita indagine mineralogica (Russo & Punzo, 2004). Come novità ora, tra i prodotti fumarolici, è stata individuata per la prima volta la sfalerite.218 36
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