Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Gabriella Ivaldi"'
Autor:
Emiliano Bruno, Ross J. Angel, Fabrizio Nestola, Gabriella Ivaldi, Piera Benna, Nadia Curetti
Publikováno v:
The Canadian Mineralogist. 46:1443-1454
A natural sample of anorthoclase of composition Na 0.63 K 0.27 Ca 0.10 Al 1.10 Si 2.90 O 8 (Ab 63 Or 27 An 10 ) was treated at T = 950°C for one week, and then investigated by single-crystal X-ray diffraction in situ at high pressure using a diamond
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77c6272244eb12bedf37f20a958848e8
https://doi.org/10.3749/canmin.46.6.1443
https://doi.org/10.3749/canmin.46.6.1443
Autor:
Dmitriy Yu. Pushcharovsky, Nikita V. Chukanov, A. E. Zadov, Gabriella Ivaldi, Giovanni Ferraris, Igor V. Pekov
Publikováno v:
European Journal of Mineralogy. 15:447-454
Shirokshinite, K(NaMg 2 )Si 4 O 10 F 2 , is the analogue of tainiolite, K(LiMg 2 )Si 4 O 10 F 2 , with the M 1 octahedron fully occupied by Na instead of Li. It was found in the Kirovskii underground apatite mine (Kukisvumchorr Mountain, Khibiny mass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec6b6cc99a26e1152559989e0411b8cd
https://doi.org/10.1127/0935-1221/2003/0015-0447
https://doi.org/10.1127/0935-1221/2003/0015-0447
Autor:
Richard M. Ibberson, Giovanni Ferraris, Umberto Russo, Alessandro Pavese, Nadia Curetti, Gabriella Ivaldi
Publikováno v:
European Journal of Mineralogy. 15:357-363
The results on deprotonation and cation partitioning as a function of temperature in the tetrahedral and octahedral sites of a phengite 3 T , (K 0.94 Na 0.02 ) ∑0.96 (Al 1.43 Mg 0.33 Fe 0.25 ) ∑2.01 (Si 3.47 Al 0.53 ) ∑4 O 10 (OH) 2 , from Cima
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91cacdff6c81c10d34302b8bb692b4b7
https://doi.org/10.1127/0935-1221/2003/0015-0357
https://doi.org/10.1127/0935-1221/2003/0015-0357
Autor:
Yu. S. Lebedeva, Giovanni Ferraris, Igor V. Pekov, D. Yu. Pushcharovskii, Gabriella Ivaldi, Alla A. Novakova
Publikováno v:
Crystallography Reports. 48:16-23
The crystal structure of the Na,Ca-amphibole magnesioferrikatophorite found in carbonatites from the Turiy Cape (Kola Peninsula) was refined (Siemens P4 diffractometer, λMoK α radiation, 1481 independent reflections with |F|>4σ(F), anisotropic ref
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f048b471edbddc723ea8bf2c58577b80
https://doi.org/10.1134/1.1541736
https://doi.org/10.1134/1.1541736
Publikováno v:
The Canadian Mineralogist. 40:1641-1648
La ferriallanite-(Ce), de composition ideale CaCeFe 3 + AlFe 2 + (SiO 4 )(Si 2 O 7 )O(OH), est un analogue de l'allanite-(Ce) a dominance de Fe 3 + dans le site octaedrique M(1). Cette nouvelle espece minerale, d'origine metasomatique, provient d'une
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b83c2639942373eadbe53b3be5799bd7
https://doi.org/10.2113/gscanmin.40.6.1641
https://doi.org/10.2113/gscanmin.40.6.1641
Publikováno v:
The Canadian Mineralogist. 40:1629-1639
Gjerdingenite-Fe occurs as yellow prisms or laths up to 1 mm long in miarolitic cavities of a sodic granite (“ekerite”) at Gjerdingselva, Lunner, Oppland, Oslo Region, Norway. The simplified formula is K 2 [(H 2 O) 2 (Fe,Mn)][(Nb,Ti) 4 (Si 4 O 12
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ee4b4de5314006e5cf7889fd092f30b
https://doi.org/10.2113/gscanmin.40.6.1629
https://doi.org/10.2113/gscanmin.40.6.1629
Autor:
Giovanni Ferraris, Nikita V. Chukanov, Alla N. Bogdanova, Sergey N. Britvin, Gabriella Ivaldi
Publikováno v:
Neues Jahrbuch für Mineralogie - Monatshefte. 2002:160-168
Cattiite, Mg 3(PO4)2·22H2O, is a new mineral from Zhelezny (Iron) Mine (Kovdor carbonatite massif, Kola Peninsula, Russia). It appears as crystalline mas- ses up to 1.5cm in size filling up cavities of dolomite carbonatite. Associated min- erals are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95593a0a680df266409599e9dfe479bd
https://doi.org/10.1127/0028-3649/2002/2002-0160
https://doi.org/10.1127/0028-3649/2002/2002-0160
Autor:
Giovanni Ferraris, Nikita V. Chukanov, Gabriella Ivaldi, D. Yu. Pushcharovsky, Igor V. Pekov, Natalia V. Zubkova
Publikováno v:
Neues Jahrbuch für Mineralogie - Monatshefte. 2002:85-96
A new occurrence of natrite,g-Na 2 (CO 3 ), was discovered as monominerallenses (more than 20cm in size) in pegmatites of Mt. Koashva, Khibiny alkalinemassif, Kola peninsula, Russia. Electron microprobe, XRD, IR and optical data fornatrite of this ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f5da08f31a293875baa24110f64abbc
https://doi.org/10.1127/0028-3649/2002/2002-0085
https://doi.org/10.1127/0028-3649/2002/2002-0085
Autor:
Giovanni Ferraris, Gabriella Ivaldi
Publikováno v:
Reviews in Mineralogy and Geochemistry. 46:117-153
The large number of mica species (end-members) and varieties is based on chemical variability and peculiar structural features like polytypism, local and global symmetry. In addition, mainly because of an inherent misfit between the constituent tetra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f642c33cf666f90543aa14273506d38
https://doi.org/10.2138/rmg.2002.46.03
https://doi.org/10.2138/rmg.2002.46.03
Autor:
Natalia V. Zubkova, Giovanni Ferraris, Igor V. Pekov, Dmitry Yu. Pushcharovsky, Gabriella Ivaldi
Publikováno v:
The Canadian Mineralogist. 39:1307-1316
By using a crystal from a new locality, the structure of delindeite has been refined to R = 0.054 for 703 unique reflections with I > 2σ ( I ). This titanosilicate [ideally Ba 2 {(Na,K,□) 3 (Ti,Fe)[Ti 2 (O,OH) 4 Si 4 O 14 ](H 2 O,OH) 2 }, space gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::318103fbb1542e57dbd0e9c397ae6277
https://doi.org/10.2113/gscanmin.39.5.1307
https://doi.org/10.2113/gscanmin.39.5.1307