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Calcybeborosilite-(Y)

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Formula:
(Y,Ca)2(□,Fe2+)(B,Be)2[SiO4]2(OH,O)2
System:
Monoclinic
Name:
Named after it's composition of calcium, beryllium, boron and silicon.
Questionable member of the Gadolinite-Datolite Group.

Originally reported from Dara-i-Pioz Glacier, Alayskiy (Alai) Range, Tien Shan Mts, Region of Republican Subordination, Tajikistan.

Classification of Calcybeborosilite-(Y)

Published without Approval 1996
Explanation of status:
Unnamed Mineral A of Semenov et al. (1963); named by Povarennykh & Dusmatov (1970), but not approved by CNMMN. Levinson-type suffix added later in conformity with CNMMN policy. Probably = gadolinite-(Y).
9.AJ.20

9 : SILICATES (Germanates)
A : Nesosilicates
J : Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra, cornersharing with SiO4
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First Recorded Occurrence of Calcybeborosilite-(Y)

Crystallography of Calcybeborosilite-(Y)

Crystal System:
Monoclinic

Chemical Properties of Calcybeborosilite-(Y)

Formula:
(Y,Ca)2(□,Fe2+)(B,Be)2[SiO4]2(OH,O)2
Essential elements:
All elements listed in formula:

Relationship of Calcybeborosilite-(Y) to other Species

Other Members of Group:
BakeriteCa4(H5B5Si3O20)
DatoliteCa(HBSiO5)
Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Gadolinite-(Y)Y2Fe2+Be2Si2O10
Hingganite-(Ce)(Ce,REE)2(□,Fe2+)Be2[SiO4]2(OH)2
Hingganite-(Y)(Y,REE,Ca)2(□,Fe2+)Be2[SiO4]2(OH)2
Hingganite-(Yb)(Yb,Y,REE)2□Be2[SiO4]2(OH)2
HomiliteCa2(Fe2+,Mg)B2Si2O10
Minasgeraisite-(Y)CaBe2Y2Si2O10
9.AJ.05Grandidierite(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2
9.AJ.05Ominelite(Fe2+,Mg)(Al,Fe3+)3(SiO4)(BO3)O2
9.AJ.10Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
9.AJ.10Holtite(Ta0.60.4)Al6BSi3O18(O,OH)2.25
9.AJ.10Magnesiodumortierite(Mg,Ti,◻(Al,Mg)2Al4Si3O18-y(OH)yB y = 2-3
9.AJ.15GarrelsiteBa3NaSi2B7O16(OH)4
9.AJ.20BakeriteCa4(H5B5Si3O20)
9.AJ.20DatoliteCa(HBSiO5)
9.AJ.20Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
9.AJ.20Gadolinite-(Y)Y2Fe2+Be2Si2O10
9.AJ.20Hingganite-(Ce)(Ce,REE)2(□,Fe2+)Be2[SiO4]2(OH)2
9.AJ.20Hingganite-(Y)(Y,REE,Ca)2(□,Fe2+)Be2[SiO4]2(OH)2
9.AJ.20Hingganite-(Yb)(Yb,Y,REE)2□Be2[SiO4]2(OH)2
9.AJ.20HomiliteCa2(Fe2+,Mg)B2Si2O10
9.AJ.20Melanocerite-(Ce)(Ce,Ca)5(SiO4,BO4)3(OH,0)
9.AJ.20Minasgeraisite-(Y)CaBe2Y2Si2O10
9.AJ.25Stillwellite-(Ce)(Ce,La,Ca)BSiO5
9.AJ.30Cappelenite-(Y)Ba(Y,Ce)6Si3B6O24F2
9.AJ.35Okanoganite-(Y)(Na,Ca)3(Y,Ce)12Si6B2O27F14
9.AJ.35Vicanite-(Ce)(Ca,Ce,La,Th)15As5+(As3+0.5,Na0.5)Fe3+Si6B4O40F7
9.AJ.35Hundholmenite-(Y)(Y,REE,Ca,Na)15(Al,Fe3+)(CaxAs3+1-x)(Si,As5+)Si6B3(O,F)48
9.AJ.35Proshchenkoite-(Y)Ca(Y,REE,Ca,Na,Mn)15Fe2+(P,Si)Si6B3O34F14
9.AJ.40JadariteLiNaSiB3O7(OH)

Other Names for Calcybeborosilite-(Y)

Name in Other Languages:

Other Information

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 Calcybeborosilite-(Y)

Reference List:
Soviet Physics - Crystallography 8 (1963), 539.

American Mineralogist 49 (1964), 443.

Mineralogical Magazine 39 (1974), 909.

Crystallography Reports 41 (1996), 217.

American Mineralogist 86 (2001), 1537.

Rastsvetaeva et al. (1996): Kristallografiya, 41, 2, 235-239.

Pekov, I. V. (1998): Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures Ltd., Moscow, 369 pp. (page 53).

Internet Links for Calcybeborosilite-(Y)

Localities for Calcybeborosilite-(Y)

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Tajikistan (FRL)
 
  • Region of Republican Subordination
    • Tien Shan Mtn
      • Alai Range (Alayskiy)
http://www.koeln.netsurf.de/~w.steffens/dara.htm; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Pautov L.A., Agakhanov A.A., Sokolova E.V., Hawthorne F., Karpenko V.Yu. (2011) Byzantievite, Ba5(Ca,REE,Y)22(Ti,Nb)18(SiO4)4[(PO4),(SiO4)]4(BO3)9O21[(OH),F]43(H2O)1.5, a new mineral. New Data on Minerals 46:5-12
Mineral and/or Locality  
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