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Calciotantite

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About CalciotantiteHide

Formula:
CaTa4O11
Colour:
Colorless
Lustre:
Adamantine
Hardness:
Crystal System:
Hexagonal
Name:
The name alludes to the CALCIum content and its chemical relationship to TANTITE.
See also the discredited ungursaite.


Classification of CalciotantiteHide

Approved
First Published:
1982
4.DJ.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
J : With large (+- medium-sized) cations; polyhedral frameworks
8.6.2.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
6 : (AB)6O11·nH2O
18.1.9

18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U

Physical Properties of CalciotantiteHide

Adamantine
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
6½ on Mohs scale
Hardness:
VHN20=1200 kg/mm2 - Vickers
Cleavage:
None Observed

Optical Data of CalciotantiteHide

Type:
Uniaxial
Type:
Anisotropic
Reflectivity:
486nmR1=16.9%R2= 16.3%
551nmR1=17.0%R2= 16.6%
589nmR1=17.1%R2= 16.7%
656nmR1=18.2%R2= 18.0%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 18.2%.
R1 shown in black, R2 shown in red

Chemical Properties of CalciotantiteHide

Formula:
CaTa4O11

Crystallography of CalciotantiteHide

Crystal System:
Hexagonal
Cell Parameters:
a = 6.22 Å, c = 12.25 Å
Ratio:
a:c = 1 : 1.969
Unit Cell V:
410.44 ų (Calculated from Unit Cell)

Type Occurrence of CalciotantiteHide

General Appearance of Type Material:
Calciotantite occurs as square to rectangular to hexagonal crystals 0.03-0.05 mm as inclusions in microlite or as veinlets 0.1-0.3 mm in microlite.
Associated Minerals at Type Locality:
Reference:
Voloshin, A.V., Pakhomovskii, Y.A., Tysheva, F.M. (1982) Calciotantite, CaTa4O11 - a new mineral from granitic pegmatites of the Kola Peninsula. Mineralogiceskij Zhurnal: 4: 75-79.

Synonyms of CalciotantiteHide

Other Language Names for CalciotantiteHide

Relationship of Calciotantite to other SpeciesHide

Other Members of this group:
IrtyshiteNa2(Ta,Nb)4O11Hex.
NatrotantiteNa2Ta4O11Mon.

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Calciotantite associated with StibiotantaliteSb(Ta,Nb)O4
1 photo of Calciotantite associated with Microlite GroupA2-mTa2X6-wZ-n
1 photo of Calciotantite associated with Tantalite-(Mn)Mn2+Ta2O6

Related Minerals - Nickel-Strunz GroupingHide

4.DJ.05IrtyshiteNa2(Ta,Nb)4O11Hex.
4.DJ.05NatrotantiteNa2Ta4O11Mon.

Related Minerals - Dana Grouping (8th Ed.)Hide

8.6.2.2NatrotantiteNa2Ta4O11Mon.
8.6.2.3IrtyshiteNa2(Ta,Nb)4O11Hex.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

18.1.1LithiotantiteLiTa3O8Mon.
18.1.2LueshiteNaNbO3Orth. mmm (2/m 2/m 2/m)
18.1.3NatroniobiteNaNbO3Mon.
18.1.4FranconiteNa(Nb2O5)(OH) · 3H2OMon.
18.1.5NatrotantiteNa2Ta4O11Mon.
18.1.6IrtyshiteNa2(Ta,Nb)4O11Hex.
18.1.7Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31Orth. mmm (2/m 2/m 2/m) : Cmmm
18.1.8Hydropyrochlore(H2O,□)2Nb2(O,OH)6(H2O)Iso. m3m (4/m 3 2/m) : Fd3m
18.1.10RynersoniteCaTa2O6Orth. mmm (2/m 2/m 2/m)
18.1.11Microlite GroupA2-mTa2X6-wZ-nIso. m3m (4/m 3 2/m) : Fd3m
18.1.12BelyankiniteCa1-2(Ti,Nb)5O12 · 9H2O (?)Amor.
18.1.13LatrappiteCa2NbFe3+O6Orth. mmm (2/m 2/m 2/m) : Pnma
18.1.14Hochelagaite(Ca,Na,Sr)(Nb,Ti,Si,Al)4O11 · 8H2OMon.
18.1.15Bariomicrolite (of Hogarth 1977)Iso. m3m (4/m 3 2/m) : Fd3m
18.1.16ParabariomicroliteBaTa4O10(OH)2 · 2H2OTrig.
18.1.17Bariopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6ZIso. m3m (4/m 3 2/m) : Fd3m
18.1.18AlumotantiteAlTaO4Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.19SimpsoniteAl4(Ta,Nb)3O13(OH,F)Trig. 3 : P3
18.1.20Sosedkoite(K,Na)5Al2(Ta,Nb)22O60Orth.
18.1.21Thoreaulite(Sn2+,Pb)(Ta,Nb)2O6Mon.
18.1.22Stannomicrolite (of Hogarth 1977)
18.1.23FoorditeSn2+(Nb,Ta)2O6Mon. 2/m : B2/b
18.1.24ChangbaiitePbNb2O6Trig.
18.1.25Plumbopyrochlore (of Skorobogatova et al.)A2Nb2(O,OH)6Z
18.1.26Plumbomicrolite (of Hogarth 1977)
18.1.27StibiocolumbiteSb(Nb,Ta)O4Orth. mm2
18.1.28StibiotantaliteSb(Ta,Nb)O4Orth. mm2
18.1.29NatrobistantiteIso.
18.1.30Cesplumtantite(Cs,Na)2(Pb,Sb3+)3Ta8O24Tet.
18.1.31Stibiomicrolite (of Groat et al.)
18.1.32Cesstibtantite
18.1.34BismutotantaliteBi(Ta,Nb)O4Orth.
18.1.35Bismutomicrolite (of Hogarth 1977)Iso. m3m (4/m 3 2/m) : Fd3m
18.1.36Tantalite-(Mn)Mn2+Ta2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.37Gerasimovskite(Mn,Ca)(Nb,Ti)5O12 · 9H2OAmor.
18.1.38Tapiolite-(Mn)(Mn,Fe)(Ta,Nb)2O6Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
18.1.39Columbite-(Mn)Mn2+Nb2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.40WodginiteMn2+Sn4+Ta2O8Mon.
18.1.41Ixiolite(Ta,Nb,Sn,Fe,Mn)4O8Orth.
18.1.42Columbite-(Fe)Fe2+Nb2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.43Tantalite-(Fe)Fe2+Ta2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.44ColumbiteOrth. mmm (2/m 2/m 2/m) : Pbcn
18.1.45Tantalite(Mn,Fe)(Ta,Nb)2O6
18.1.46Tapiolite(Fe,Mn)(Ta,Nb)2O6Tet. 4/mmm (4/m 2/m 2/m)
18.1.47Tapiolite-(Fe)(Fe,Mn)(Ta,Nb)2O6Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
18.1.48Columbite-(Mg)(Mg,Fe,Mn)(Nb,Ta)2O6Orth.
18.1.50Strüverite(Ti,Ta,Fe)O2
18.1.51 Staringite(Fe,Mn)x(Ta,Nb)2xSn6-3xO12

Fluorescence of CalciotantiteHide

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 CalciotantiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Voloshin, A.V., Pakhomovskii, Y.A., Tysheva, F.M. (1982) Calciotantite, CaTa4O11 - a new mineral from granitic pegmatites of the Kola Peninsula. Mineralogiceskij Zhurnal: 4: 75-79.
Dunn, P.J., Fleischer, M., Burns, R.G., Pabst, A. (1983) New mineral names. American Mineralogist: 68: 471-475.
Yamnova, N.A., Pushcharovskii, D.Y., Voloshin, A.V. (1998) Identity of ungursaite with calciotantite and synthetic CaTa4O11. Soviet Physics - Crystallography: 33: 498-499.
Cooper, M.A., Hawthorne, F.C., Černý, P. (1999) Ta–Nb order in the crystal structure of niobium-rich calciotantite. The Canadian Mineralogist: 37: 1289-1294.

Internet Links for CalciotantiteHide

Localities for CalciotantiteHide

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.
Australia
 
  • Western Australia
    • Port Hedland Shire
      • Abydos Station
        • Wodgina
Sweetapple, M.T., Cornellius, H., Collins, P.L.F. (2001) Tantalum Mineralisation of the Wodgina District: The Wodgina and Mt Cassiterite Pegmatite Orebodies, pp 48-57, Sept 2001.
DR Congo
 
  • Tanganyika
Voloshin A.V., Pakhomovskii Ya.A. (1988) Mineralogy of tantalum and niobium in rare-metal pegmatites, - Leningrad, Nauka, p. 240 (in Rus.)
Kazakhstan
 
  • East Kazakhstan
    • Kalba Range
      • Irtysh River
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Russia (TL)
 
  • Murmansk Oblast
    • Voron'i Tundry
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Sweden
 
  • Stockholm County
    • Haninge
      • Utö
        • Utö Mines
Smeds, S.-A. & Černý, P. & Chapman, R. (1999): Niobian calciotantite and plumboanstannoan cesstibtantite from Utö, Sweden. Canadian Mineralogist 37, 665–672.
Cooper, M.A.; Hawthorne, F.C and Cerný, P. (1999): Ta-Nb order in the crystal structure of niobium rich calciotantite. Canadian Mineralogist 37:1289-1294
 
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