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Irtyshite

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Formula:
Na2Ta4O11
System:
Hexagonal
Colour:
colorless
Hardness:
7
Name:
Named for the Irtysh River.
This page provides mineralogical data about Irtyshite.


Classification of Irtyshite

Approved
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
8.6.2.3

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

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

Physical Properties of Irtyshite

Adamantine
Diaphaneity (Transparency):
Transparent
Colour:
colorless
Hardness (Mohs):
7
Hardness (Vickers):
VHN20=1190 kg/mm2
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
7.03 g/cm3 (Calculated)

Crystallography of Irtyshite

Crystal System:
Hexagonal
Cell Parameters:
a = 6.23Å, c = 36.77Å
Ratio:
a:c = 1 : 5.902
Unit Cell Volume:
V 1,235.95 ų (Calculated from Unit Cell)
Z:
6
Comment:
Р6 3/m ог Р6 3
X-Ray Powder Diffraction Data:
d-spacingIntensity
6.13 (7)
5.18 (6)
3.082 (9)
3.029 (10)
2.780 (9)
2.480 (6)

Optical Data of Irtyshite

Type:
Uniaxial
Type:
Anisotropic
Pleochroism:
Non-pleochroic

Chemical Properties of Irtyshite

Formula:
Na2Ta4O11
Elements listed in formula:

Relationship of Irtyshite to other Species

Other Members of Group:
CalciotantiteCaTa4O11
NatrotantiteNa2Ta4O11
18.1.1LithiotantiteLiTa3O8
18.1.2LueshiteNaNbO3
18.1.3NatroniobiteNaNbO3
18.1.4FranconiteNaNb2O5(OH) · 3H2O
18.1.5NatrotantiteNa2Ta4O11
18.1.7Rankamaite(Na,K,Pb)(Ta,Nb,Al)4(O,OH)10
18.1.8Hydropyrochlore(H2O,◻)2Nb2(O,OH)6(H2O)
18.1.9CalciotantiteCaTa4O11
18.1.10RynersoniteCaTa2O6
18.1.11Microlite Group(Ca,Na)2Ta2(O,OH,F)7
18.1.12BelyankiniteCa1-2(Ti,Zr,Nb)5O12 · 9H2O
18.1.13LatrappiteCa2NbFe3+O6
18.1.14HochelagaiteCaNb4O11 · 8H2O
18.1.15Bariomicrolite (of Hogarth 1977)
18.1.16ParabariomicroliteBaTa4O10(OH)2 · 2H2O
18.1.17Bariopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6Z
18.1.18AlumotantiteAlTaO4
18.1.19SimpsoniteAl4Ta3O13(OH)
18.1.20SosedkoiteK5Al2Ta22O60
18.1.21ThoreauliteSn2+Ta2O6
18.1.22Stannomicrolite (of Hogarth 1977)
18.1.23FoorditeSn2+Nb2O6
18.1.24ChangbaiitePbNb2O6
18.1.25Plumbopyrochlore (of Skorobogatova et al.)A2Nb2(O,OH)6Z
18.1.26Plumbomicrolite (of Hogarth 1977)
18.1.27StibiocolumbiteSbNbO4
18.1.28StibiotantaliteSb3+TaO4
18.1.29Natrobistantite
18.1.30CesplumtantiteCs2Pb3Ta8O24
18.1.31Stibiomicrolite (of Groat et al.)
18.1.32Cesstibtantite
18.1.34BismutotantaliteBiTaO4
18.1.35Bismutomicrolite (of Hogarth 1977)
18.1.36Tantalite-(Mn)Mn2+Ta2O6
18.1.37GerasimovskiteMn2+(Ti,Nb)5O12 · 9H2O
18.1.38Tapiolite-(Mn)Mn2+Ta2O6
18.1.39Columbite-(Mn)Mn2+Nb2O6
18.1.40WodginiteMn2+Sn4+Ta2O8
18.1.41Ixiolite(Ta,Mn,Nb)O2
18.1.42Columbite-(Fe)Fe2+Nb2O6
18.1.43Tantalite-(Fe)Fe2+Ta2O6
18.1.44Columbite
18.1.45Tantalite(Mn,Fe)(Ta,Nb)2O6
18.1.46Tapiolite(Fe,Mn)(Ta,Nb)2O6
18.1.47Tapiolite-(Fe)Fe2+Ta2O6
18.1.48Columbite-(Mg)MgNb2O6
18.1.50Strüverite(Ti,Ta,Fe)O2
18.1.51 Staringite(Fe,Mn)x(Ta,Nb)2xSn6-3xO12

Other Names for Irtyshite

Name in Other Languages:
German:Irtyshit
Spanish:Irtyshita

Other Information

Other Information:
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:
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

American Mineralogist (1986): 71: 1545.

Internet Links for Irtyshite

mindat.org URL:
http://www.mindat.org/min-2049.html
Please feel free to link to this page.

Localities for Irtyshite

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.
Kazakhstan (TL)
 
  • Eastern Kazakhstan Province (Shyghys Qazaqstan Oblysy; Vostochno-Kazakhstanskaya Oblast')
    • Kalba Range
      • Irtysh River
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
Mineral and/or Locality  
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