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vicanite

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Journal Article
Published: 04 March 2021
The Canadian Mineralogist (2021) 59 (1): 177–189.
... )(BO 3 )F 11 . Arrheniusite-(Ce) belongs to the vicanite group of minerals and is distinct from other isostructural members mainly by having a Mg-dominant, octahedrally coordinated site ( M 6); it can be considered a Mg-As analog to hundholmenite-(Y). The threefold coordinated T 5 site is partly...
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Journal Article
Published: 01 October 2008
Mineralogical Magazine (2008) 72 (5): 1071–1082.
...G. Raade; J. D. Grice; M. Erambert; P. Kristiansson; T. Witzke Abstract A REE -bearing fluorosilicate from the Tommot REE -Nb deposit in Yakutia, Russia, described without a name in 1966, is characterized here as a new species, proshchenkoite-(Y), of the vicanite group of borosilicates. Wavelength...
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Journal Article
Published: 01 April 2007
Mineralogical Magazine (2007) 71 (2): 179–192.
... = 27.02(2) Å, V = 2667(5) Å 3 , Z = 3. The crystal structure was refined to R 1 = 0.037 for 1720 observed reflections. Hundholmenite-(Y) is isostructural with okanoganite-(Y) and vicanite-(Ce), and the differences in site populations are discussed. The strongest seven reflections of the X-ray powder...
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Journal Article
Published: 01 October 2004
American Mineralogist (2004) 89 (10): 1540–1545.
...Massimo Boiocchi; Athos Callegari; Luisa Ottolini; Adriana Maras Abstract The structure of okanoganite-(Y), a rare REE-rich borofluorosilicate, was refined in space group R 3 m , starting from the atomic coordinates of vicanite-(Ce), to a final R -factor of 0.032 for 1857 observed reflections...
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Journal Article
Published: 01 August 2002
American Mineralogist (2002) 87 (8-9): 1139–1143.
...Paolo Ballirano; Athos Callegari; Franca Caucia; Adriana Maras; Fiorenzo Mazzi; Luciano Ungaretti Abstract The crystal structure of holotype vicanite-(Ce) has been solved and refined to R = 1.8% for 1398 observed reflections with the aid of a new crystal from the same locality (Tre Croci, Vetralla...
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Journal Article
Published: 01 April 1995
European Journal of Mineralogy (1995) 7 (2): 439–446.
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COMPARISON OF <b>VICANITE</b>-GROUP MINERALS (MODIFIED FROM  UVAROVA  et al . 2013...
Published: 04 March 2021
TABLE 8. COMPARISON OF VICANITE-GROUP MINERALS (MODIFIED FROM UVAROVA et al . 2013 ) IN TERMS OF THE DOMINANT CATION AT THE SPECIFIC CRYSTALLOGRAPHIC SITES
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Layer A. Projection along [001] of a slab of the <b>vicanite</b>-(Ce) structure at...
Published: 01 August 2002
F igure 1. Layer A. Projection along [001] of a slab of the vicanite-(Ce) structure at z ca. 0. Arrow: O8 of B1 tetrahedron pointing down.
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Layer B. Projection along [001] of a slab of the <b>vicanite</b>-(Ce) structure at...
Published: 01 August 2002
F igure 2. Layer B. Projection along [001] of a slab of the vicanite-(Ce) structure at z ca. 1/9.
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Layer C. Projection along [001] of a slab of the <b>vicanite</b>-(Ce) structure at...
Published: 01 August 2002
F igure 3. Layer C. Projection along [001] of a slab of the vicanite-(Ce) structure at z ca. 2/9. For sake of clarity, Na and As polyhedra are drawn separately at x = 1/3, y = 2/3 and respectively at x = 4/3, y = 2/3.
Journal Article
Published: 01 February 2011
Mineralogical Magazine (2011) 75 (1): 33–43.
... species were found: vicanite-(Ce) ( Maras et al. , 1995 ; Ballirano et al. , 2002 ), peprossiite-(Ce) ( Della Ventura et al. , 1993 ; Callegari et al. , 2000 ), stoppaniite ( Ferraris et al. , 1998 ; Della Ventura et al. , 2000 ) and piergorite-(Ce) ( Boiocchi et al. , 2006 ). Furthermore, some...
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Journal Article
Published: 01 July 2006
American Mineralogist (2006) 91 (7): 1170–1177.
..., the crystal-chemical knowledge of REE-minerals has been improved by the study of samples from the Vico volcanic complex (Viterbo province, Italy). In particular, among the accessory phases of the syenitic ejecta named “sanidiniti,” two new mineral species were found: vicanite-(Ce) ( Ballirano et al. 2002...
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Journal Article
Published: 01 February 2012
Mineralogical Magazine (2012) 76 (1): 151–155.
.... Sokolova and F.C. Hawthorne *E-mail: pla@fmm.ru Structurally related to structurally related to the okanoganite–vicanite group Hexagonal: R 3 m ; structure determined a = 10.804(2), c = 27.726(6) Å 4.41(29), 3.13(26), 3.03(100), 2.982(85), 2.954(60), 2.689(40), 1.797(31), 1.770...
Journal Article
Published: 01 April 2005
American Mineralogist (2005) 90 (4): 768–773.
...) The chemistry and crystal structure of okanoganite-(Y) and comparison with vicanite-(Ce). Am. Mineral. 89(10), 1540–1545. The crystal structure of the nesoborosilicate mineral okanoganite-(Y) has been determined by single-crystal X-ray diffraction methods, R 1 = 0.0323 for 1857 reflections with I >...
Journal Article
Published: 01 October 2014
American Mineralogist (2014) 99 (10): 2150–2158.
... (2013) Laptevite-(Ce) NaFe 2+ (REE 7 Ca 5 Y 3 )(SiO 4 ) 4 (Si 3 B 2 PO 18 )(BO 3 )F 11 —a new vicanite-group mineral from Darai-Pioz alkaline massif. Novye dannye o mineralakh (New data on minerals), 48, 5–11 (in Russian). Y.A. Uvarova, E. Sokolova, F.C. Hawthorne, A.A. Agakhanov, V.Y. Karpenko...
Journal Article
Published: 01 September 2018
American Mineralogist (2018) 103 (9): 1497–1501.
... Synadelphite Mn 9 2+ (As 3+ O 3 )(As 5+ O 4 ) 2 (OH) 9 ·2H 2 O Vicanite-(Ce) (Ca,Ce,La,Th) 15 As 5+ (As 3+ ,Na) 0.5 Fe 3+ 0.7 Si 6 B 4 (O,F) 47 The As 5+ O 4 tetrahedron is slightly distorted, with the As1-O1 bond length (1.698 Å) longer than the three As1-O2 distances (1.679 Å) ( Table 2...
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Journal Article
Published: 01 July 2008
American Mineralogist (2008) 93 (7): 996–1004.
... Ventura et al. 1993 ; Callegari et al. 2000 ), stillwellite-(Ce) ( Burns et al. 1993 ), vicanite-(Ce) ( Maras et al. 1995 ), and several minerals of the hellandite group, such as hellandite-(Ce) ( Oberti et al. 1999 ), mottanaite-(Ce), ciprianiite ( Della Ventura et al. 2002 ), and piergorite-(Ce...
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Journal Article
Published: 01 October 2012
European Journal of Mineralogy (2012) 24 (6): 1053–1060.
.... ( 2000 ): Jana2000 . The crystallographic computing system . Institute of Physics , Praha, Czech Republic . Raade G. Johnsen O. Erambert M. Petersen O.V. ( 2007 ): Hundholmenite-(Y) from Norway - A new mineral species in the vicanite group: descriptive data and crystal...
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Journal Article
Published: 01 May 2002
American Mineralogist (2002) 87 (5-6): 739–744.
... , 25 , 66 –68. Mandarino, J.A. ( 1981 ) The Gladstone-Dale relationship: Part IV. The compatibility concept and its application. Canadian Mineralogist , 19 , 441 –450 Maras, A., Parodi, G.C., Della Ventura, G., and Ohnestetter, D. ( 1995 ) Vicanite-(Ce): a new Ca-Th-RE borosilicate from...
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Journal Article
Published: 01 August 2015
Mineralogical Magazine (2015) 79 (4): 949–963.
... ) (SiO 4 ) 4 (Si 3 B 2 PO 18 )(BO 3 )F 11 – new mineral of the vicanite group from the Darai-Pioz alkaline massif, Tajikistan . Novye Dannye o Mineralakh , 48 , 5 – 11 [in Russian] . Belakovskiy D.I. ( 1991 ) Die seltenen Mineralien von Dara-i-Pioz im Hochgebirge Tadshikistans...
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