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Vicanite-(Ce)

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About Vicanite-(Ce)Hide

Formula:
(Ca,Ce,La,Th)15As5+(As3+0.5,Na0.5)Fe3+Si6B4O40F7
Colour:
Green, yellow
Lustre:
Vitreous
Hardness:
5½ - 6
Crystal System:
Trigonal
Member of:
Name:
Named after its discovery locality, Vican (Vico Lake) volcanic complex, Latium, Viterbo, Italy.

Classification of Vicanite-(Ce)Hide

Approved
Approval Year:
1991
9.AJ.35

9 : SILICATES (Germanates)
A : Nesosilicates
J : Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra, cornersharing with SiO4
54.3.1.1

54 : NESOSILICATES Borosilicates and Some Beryllosilicates
3 :

Physical Properties of Vicanite-(Ce)Hide

Vitreous
Colour:
Green, yellow
Streak:
White
Hardness:
5½ - 6 on Mohs scale

Optical Data of Vicanite-(Ce)Hide

Type:
Uniaxial (-)
RI values:
nω = 1.757 nε = 1.722
Max Birefringence:
δ = 0.035
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High

Chemical Properties of Vicanite-(Ce)Hide

Formula:
(Ca,Ce,La,Th)15As5+(As3+0.5,Na0.5)Fe3+Si6B4O40F7
IMA Formula:
(Ca,Ce,La,Th)15As5+(As3+,Na)0.5Fe3+0.7Si6B4(O,F)47

Crystallography of Vicanite-(Ce)Hide

Crystal System:
Trigonal

Type Occurrence of Vicanite-(Ce)Hide

Synonyms of Vicanite-(Ce)Hide

Other Language Names for Vicanite-(Ce)Hide

Relationship of Vicanite-(Ce) to other SpeciesHide

Member of:
Other Members of this group:
Hundholmenite-(Y)(Y,REE,Ca,Na)15(Al,Fe3+)(CaxAs3+1-x)(Si,As5+)Si6B3(O,F)48Trig. 3m : R3m
Laptevite-(Ce)Ca6(Fe2+,Mn2+)Y3REE7(SiO4)3(PO4)(B3Si3O18)(BO3)F11Trig. 3m : R3m
Okanoganite-(Y)(Na,Ca)3(Y,Ce)12Si6B2O27F14
Proshchenkoite-(Y)Ca(Y,REE,Ca,Na,Mn)15Fe2+(P,Si)Si6B3O34F14Trig. 3m : R3m

Common AssociatesHide

Associated Minerals Based on Photo Data:
Apatite1 photo of Vicanite-(Ce) associated with Apatite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.AJ.Hingganite-(Nd)(Nd,Y,Ce,Sm)2(◻,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
9.AJ.05Grandidierite(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2Orth. mmm (2/m 2/m 2/m)
9.AJ.05Ominelite(Fe2+,Mg)(Al,Fe3+)3(SiO4)(BO3)O2Orth. mmm (2/m 2/m 2/m)
9.AJ.10Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3Orth. mmm (2/m 2/m 2/m)
9.AJ.10Holtite(Ta0.60.4)Al6BSi3O18(O,OH)2.25Orth. mmm (2/m 2/m 2/m) : Pnma
9.AJ.10Magnesiodumortierite(Mg,Ti,◻(Al,Mg)2Al4Si3O18-y(OH)yB y = 2-3Orth.
9.AJ.15GarrelsiteBa3NaSi2B7O16(OH)4Mon.
9.AJ.20BakeriteCa4(H5B5Si3O20)Mon. 2/m : P21/b
9.AJ.20DatoliteCaB(SiO4)(OH)Mon. 2/m : P21/b
9.AJ.20Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10Mon. 2/m
9.AJ.20Gadolinite-(Y)Y2Fe2+Be2Si2O10Mon. 2/m : P21/b
9.AJ.20Hingganite-(Ce)(Ce,REE)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
9.AJ.20Hingganite-(Y)(Y,REE,Ca)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
9.AJ.20Hingganite-(Yb)(Yb,Y,REE)2□Be2[SiO4]2(OH)2
9.AJ.20HomiliteCa2(Fe2+,Mg)B2Si2O10Mon. 2/m : P21/b
9.AJ.20Melanocerite-(Ce)(Ce,Ca)5(SiO4,BO4)3(OH,0)Hex.
9.AJ.20Minasgeraisite-(Y)BiCa(Y,Ln)2(□,Mn)2(Be,B,Si)4Si4O16 [(OH),O]4Tric. 1 : P1
9.AJ.20Calcybeborosilite-(Y)(Y,Ca)2(□,Fe2+)(B,Be)2[SiO4]2(OH,O)2Mon.
9.AJ.25Stillwellite-(Ce)(Ce,La,Ca)BSiO5
9.AJ.30Cappelenite-(Y)Ba(Y,Ce)6Si3B6O24F2Trig. 3 : P3
9.AJ.35Okanoganite-(Y)(Na,Ca)3(Y,Ce)12Si6B2O27F14
9.AJ.35Hundholmenite-(Y)(Y,REE,Ca,Na)15(Al,Fe3+)(CaxAs3+1-x)(Si,As5+)Si6B3(O,F)48Trig. 3m : R3m
9.AJ.35Proshchenkoite-(Y)Ca(Y,REE,Ca,Na,Mn)15Fe2+(P,Si)Si6B3O34F14Trig. 3m : R3m
9.AJ.40JadariteLiNaSiB3O7(OH)Mon. 2/m

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Vicanite-(Ce)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Rivista Min. Italiana (1994), 17(3), 207-211.
Mineralogical Record: 27: 394.
European Journal of Mineralogy (1995): 7: 439-446.
Plinius (Suppl. Ital.) European Journal of Mineralogy, Società Italiana di Mineralogia e Petrologia: 6: 123-124.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for Vicanite-(Ce)Hide

Localities for Vicanite-(Ce)Hide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Italy
 
  • Latium
    • Rome Province
Caponera, I., Fiori, S., Pucci, R., & Signoretti, E. (2007). I minerali dei Colli Albani. Un aggiornamento sugli ultimi dieci anni di ricerche. Rivista Mineralogica Italiana, 31 (2), 74-91.
    • Viterbo Province
      • Vico volcanic complex (Vico Lake)
American Mineralogist, Volume 86, pages 1066–1075, 2001
Della Ventura, G., Williams, C.T., Cabella, R., Oberti, R., Caprilli, E., Bellatreccia, F. (1999) Britholite-hellandite intergrowths and associated REE-minerals from the alkali-syenitic ejecta of the Vico volcanic complex (Latium, Italy): petrological implications bearing on REE mobility in volcanic systems. European Journal of Mineralogy, 11, 843-854; Della Ventura, G. (2002) Ciprianite, mottanaite-(Ce) e hellandite-(Ce): tre nuovi minerali scoperti nel Lazio e revisione sistematica del gruppo dell'hellandite. Il Cercapietre, 1-2; http://www.gminromano.it/Cercapietre/rivista02/testo/02A01.html; Oberti, R., Ottolini, L., Cámara, F., Della Ventura, G. (1999) Crystal structure of non-metamict Th-rich hellandite-(Ce) from Latium (Italy) and crystal chemistry of the hellandite-group minerals. American Mineralogist, 84, 913–921.
        • Vetralla
O Dziallas
http://www.gminromano.it/Cercapietre/rivista04/testo/04A04.html
Signoretti, E., Carlini, R., Mattei, L. (2004): Località minori del vulcano Vicano: Pian di S. Martino, Le Carcarelle, Torre del Quercio. Il Cercapietre, 1-2, articolo 3; http://www.gminromano.it/Cercapietre/rivista04/testo/04A04.html
European Journal of Mineralogy; April 1995; v. 7; no. 2; p. 439-446; American Mineralogist, Volume 87, pages 1139–1143, 2002
Mineral and/or Locality  
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