Irtyshite
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Formula:
Na2(Ta,Nb)4O11
Colour:
Colorless
Lustre:
Adamantine
Hardness:
7
Specific Gravity:
7.03 (Calculated)
Crystal System:
Hexagonal
Member of:
Name:
Named for the Irtysh River, a major river close to the type locality. The Irtysh leads into the Ob River. The pair, taken together, form the seventh longest river in the world.
This page provides mineralogical data about Irtyshite.
Classification of Irtyshite
Approved
First published:
1985
4/D.26-30
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
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
8.6.2.3
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
6 : (AB)6O11·nH2O
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
6 : (AB)6O11·nH2O
18.1.6
18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U
18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U
Physical Properties of Irtyshite
Adamantine
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
7 on Mohs scale
Hardness:
VHN20=1190 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
7.03 g/cm3 (Calculated)
Optical Data of Irtyshite
Type:
Uniaxial
Pleochroism:
Non-pleochroic
Chemical Properties of Irtyshite
Formula:
Na2(Ta,Nb)4O11
IMA Formula:
Na2Ta4O11
Elements listed:
Crystallography of Irtyshite
Crystal System:
Hexagonal
Cell Parameters:
a = 6.23 Å, c = 36.77 Å
Ratio:
a:c = 1 : 5.902
Unit Cell V:
1,235.95 ų (Calculated from Unit Cell)
Z:
6
Comment:
Р6 3/m ог Р6 3
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
6.13 Å | (7) |
5.18 Å | (6) |
3.082 Å | (9) |
3.029 Å | (10) |
2.780 Å | (9) |
2.480 Å | (6) |
Type Occurrence of Irtyshite
General Appearance of Type Material:
veins (0.02x0.2mm) and irregular grains (0.05mm)
Place of Conservation of Type Material:
Fersman Museum
Geological Setting of Type Material:
Granitic pegmatites
Associated Minerals at Type Locality:
Reference:
Voloshin, A.V., Pakhomovsky, Y.A., Bulgak, L.V., Perlina, G.A. (1985) Irtyshite - a new mineral from granitic pegmatites. Mineralogiceskij Zhurnal: 7: 83-87.
Synonyms of Irtyshite
Other Language Names for Irtyshite
Relationship of Irtyshite to other Species
Related Minerals - Nickel-Strunz Grouping
4.DJ.05 | Calciotantite | CaTa4O11 | Hex. |
4.DJ.05 | Natrotantite | Na2Ta4O11 | Mon. |
Related Minerals - Dana Grouping (8th Ed.)
8.6.2.1 | Calciotantite | CaTa4O11 | Hex. |
8.6.2.2 | Natrotantite | Na2Ta4O11 | Mon. |
Related Minerals - Hey's Chemical Index of Minerals Grouping
18.1.1 | Lithiotantite | LiTa3O8 | Mon. |
18.1.2 | Lueshite | NaNbO3 | Orth. mmm (2/m 2/m 2/m) |
18.1.3 | Natroniobite | NaNbO3 | Mon. |
18.1.4 | Franconite | Na(Nb2O5)(OH) · 3H2O | Mon. |
18.1.5 | Natrotantite | Na2Ta4O11 | Mon. |
18.1.7 | Rankamaite | (Na,K)3(Ta,Nb,Al)11(O,OH)31 | Orth. mmm (2/m 2/m 2/m) : Cmmm |
18.1.8 | Hydropyrochlore | (H2O,◻)2Nb2(O,OH)6(H2O) | Iso. m3m (4/m 3 2/m) : Fd3m |
18.1.9 | Calciotantite | CaTa4O11 | Hex. |
18.1.10 | Rynersonite | CaTa2O6 | Orth. mmm (2/m 2/m 2/m) |
18.1.11 | Microlite Group | A2-mTa2X6-wZ-n | Iso. m3m (4/m 3 2/m) : Fd3m |
18.1.12 | Belyankinite | Ca1-2(Ti,Nb)5O12 · 9H2O (?) | Amor. |
18.1.13 | Latrappite | Ca2NbFe3+O6 | Orth. mmm (2/m 2/m 2/m) : Pnma |
18.1.14 | Hochelagaite | (Ca,Na,Sr)(Nb,Ti,Si,Al)4O11 · 8H2O | Mon. |
18.1.15 | Bariomicrolite (of Hogarth 1977) | Iso. m3m (4/m 3 2/m) : Fd3m | |
18.1.16 | Parabariomicrolite | BaTa4O10(OH)2 · 2H2O | Trig. |
18.1.17 | Bariopyrochlore (of Hogarth 1977) | A2Nb2(O,OH)6Z | Iso. m3m (4/m 3 2/m) : Fd3m |
18.1.18 | Alumotantite | AlTaO4 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
18.1.19 | Simpsonite | Al4Ta3O13(OH) | Trig. 3 : P3 |
18.1.20 | Sosedkoite | (K,Na)5Al2(Ta,Nb)22O60 | Orth. |
18.1.21 | Thoreaulite | (Sn2+,Pb)(Ta,Nb)2O6 | Mon. |
18.1.22 | Stannomicrolite (of Hogarth 1977) | ||
18.1.23 | Foordite | Sn2+(Nb,Ta)2O6 | Mon. 2/m : B2/b |
18.1.24 | Changbaiite | PbNb2O6 | Trig. |
18.1.25 | Plumbopyrochlore (of Skorobogatova et al.) | A2Nb2(O,OH)6Z | |
18.1.26 | Plumbomicrolite (of Hogarth 1977) | ||
18.1.27 | Stibiocolumbite | Sb(Nb,Ta)O4 | Orth. mm2 |
18.1.28 | Stibiotantalite | Sb(Ta,Nb)O4 | Orth. mm2 |
18.1.29 | Natrobistantite | Iso. | |
18.1.30 | Cesplumtantite | (Cs,Na)2(Pb,Sb3+)3Ta8O24 | Tet. |
18.1.31 | Stibiomicrolite (of Groat et al.) | ||
18.1.32 | Cesstibtantite | ||
18.1.34 | Bismutotantalite | Bi(Ta,Nb)O4 | Orth. |
18.1.35 | Bismutomicrolite (of Hogarth 1977) | Iso. m3m (4/m 3 2/m) : Fd3m | |
18.1.36 | Tantalite-(Mn) | Mn2+Ta2O6 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
18.1.37 | Gerasimovskite | (Mn,Ca)(Nb,Ti)5O12 · 9H2O | Amor. |
18.1.38 | Tapiolite-(Mn) | Mn2+Ta2O6 | Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm |
18.1.39 | Columbite-(Mn) | Mn2+Nb2O6 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
18.1.40 | Wodginite | Mn2+Sn4+Ta2O8 | Mon. |
18.1.41 | Ixiolite | (Ta,Nb,Sn,Fe,Mn)4O8 | Orth. |
18.1.42 | Columbite-(Fe) | Fe2+Nb2O6 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
18.1.43 | Tantalite-(Fe) | Fe2+Ta2O6 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
18.1.44 | Columbite | Orth. mmm (2/m 2/m 2/m) : Pbcn | |
18.1.45 | Tantalite | (Mn,Fe)(Ta,Nb)2O6 | |
18.1.46 | Tapiolite | (Fe,Mn)(Ta,Nb)2O6 | Tet. 4/mmm (4/m 2/m 2/m) |
18.1.47 | Tapiolite-(Fe) | Fe2+Ta2O6 | Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm |
18.1.48 | Columbite-(Mg) | (Mg,Fe,Mn)(Nb,Ta)2O6 | Orth. |
18.1.50 | Strüverite | (Ti,Ta,Fe)O2 | |
18.1.51 | Staringite | (Fe,Mn)x(Ta,Nb)2xSn6-3xO12 |
Other Information
Notes:
yellow-green cathodoluminescence
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 Irtyshite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Voloshin, A.V., Pakhomovsky, Y.A., Bulgak, L.V., Perlina, G.A. (1985) Irtyshite - a new mineral from granitic pegmatites. Mineralogiceskij Zhurnal: 7: 83-87.
Hawthorne, F.C., Bladh, K.W., Burke, E.A.J., Ercit, S., Grew, E.S., Grice, J.D., Puziewicz, J., Roberts, A.C., Schedler, R.A., Shigley, J.E. (1986) New mineral names. American Mineralogist: 71: 1543-1548.
Internet Links for Irtyshite
mindat.org URL:
https://www.mindat.org/min-2049.html
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Localities for Irtyshite
Locality List




All localities listed without proper references should be considered as questionable.
Kazakhstan (TL) | |
| Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow |
| Волошин АВ и др. Минералогический журнал 7(1985)3, 83-87 |