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Natrotantite

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Formula:
Na2Ta4O11
System:
Monoclinic
Colour:
Colorless with slight ...
Lustre:
Adamantine
Hardness:
7
Name:
For the chemical composition.
Not to be confused with natrotitanite.


Classification of Natrotantite

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
8.6.2.2

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
6 : (AB)6O11·nH2O
18.1.5

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

Physical Properties of Natrotantite

Adamantine
Diaphaneity (Transparency):
Transparent
Colour:
Colorless with slight yellow tint
Hardness (Mohs):
7
Hardness (Vickers):
VHN40=1270 kg/mm2
Fracture:
Irregular/Uneven

Optical Data of Natrotantite

Type:
Uniaxial

Chemical Properties of Natrotantite

Formula:
Na2Ta4O11
Elements listed in formula:

Crystallography of Natrotantite

Crystal System:
Monoclinic
Cell Parameters:
a = 10.81 Å, b = 6.23 Å, c = 12.78 Å
Ratio:
a:b:c = 1.735 : 1 : 2.051
Unit Cell Volume:
V 0.00 ų (Calculated from Unit Cell)
Morphology:
Intergrown with microlite, rimming simpsonite

Type Occurrence of Natrotantite

Relationship of Natrotantite to other Species

Other Members of Group:
CalciotantiteCaTa4O11
IrtyshiteNa2(Ta,Nb)4O11
18.1.1LithiotantiteLiTa3O8
18.1.2LueshiteNaNbO3
18.1.3NatroniobiteNaNbO3
18.1.4FranconiteNaNb2O5(OH) · 3H2O
18.1.6IrtyshiteNa2Ta4O11
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 Natrotantite

Name in Other Languages:

Other Information

Other Information:
Strong yellow green catholuminescence.
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 Natrotantite

Reference List:
Bulletin de la Société française de Minéralogie et de Cristallographie (1985): 108: 541-549.

Internet Links for Natrotantite

mindat.org URL:
https://www.mindat.org/min-2864.html
Please feel free to link to this page.

Localities for Natrotantite

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.
(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.
Brazil
 
  • Rio Grande do Norte
    • Borborema mineral province
      • Equador
http://rruff.geo.arizona.edu/doclib/hom/parabariomicrolite.pdf.; Canadian Mineralogist (1986): 24: 655-663.
Portugal
 
  • Vila Real District
    • Chaves
      • Vidago
Pedro Alves collection. Characterized by p-XRD and EPMA
Russia (TL)
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Voron'i Tundry
J. W. Anthony et al.: Handbook of Mineralogy, Vol. III (1997); Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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