4.DB.55

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
B : With medium-sized cations; chains of edge-sharing octahedra

Dana 8th ed.:

8.1.7.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
1 : ABO₄

Hey's CIM Ref.:

18.1.18

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

Physical Properties of AlumotantiteHide

Lustre:

Adamantine, Greasy

Transparency:

Transparent, Translucent

Colour:

Colourless to white

Hardness:

7½ on Mohs scale

Hardness:

VHN₁₀₀=1650 - 1690 kg/mm² - Vickers

Density:

7.48 g/cm³ (Calculated)

Optical Data of AlumotantiteHide

Type:

Biaxial (-)

Reflectivity:

486 nm	R₁=15.6%	R₂= 14.7%
589 nm	R₁=15.4%	R₂= 14.6%
656 nm	R₁=15.9%	R₂= 15.1%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 15.9%.
R₁ shown in black, R₂ shown in red

Chemical Properties of AlumotantiteHide

Formula:

AlTaO₄

Elements listed:

Al, O, Ta - search for minerals with similar chemistry

Common Impurities:

Crystallography of AlumotantiteHide

Crystal System:

Orthorhombic

Class (H-M):

mmm (2/m 2/m 2/m) - Dipyramidal

Space Group:

Pbcn

Cell Parameters:

a = 4.475 Å, b = 11.308 Å, c = 4.771 Å

Ratio:

a:b:c = 0.396 : 1 : 0.422

Unit Cell V:

241.43 Å³ (Calculated from Unit Cell)

Morphology:

as euhedral to subhedral, elongated crystals to 1 mm, with rhombic to rectangular cross-section;
as rims and parallel oriented intergrowths on simpsonite, also rims around natrotantite, which in turn rims simpsonite crystals

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0005280	Alumotantite	Ercit T S, Hawthorne F C, Cerny P (1992) The crystal structure of alumotantite: Its relation to the structures of simpsonite and the (Al,Ga)(Ta,Nb)O4 compounds The Canadian Mineralogist 30 653-662		1992		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Alumotantite'
loop_
_publ_author_name
'Ercit T S'
'Hawthorne F C'
'Cerny P'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 30 
_journal_year 1992
_journal_page_first 653
_journal_page_last 662
_publ_section_title
;
 The crystal structure of alumotantite: Its relation to
 the structures of simpsonite and the (Al,Ga)(Ta,Nb)O4 compounds
;
_database_code_amcsd 0005280
_chemical_formula_sum 'Ta Al O4'
_cell_length_a 4.473
_cell_length_b 11.308
_cell_length_c 4.775
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 241.523
_exptl_crystal_density_diffrn      7.478
_symmetry_space_group_name_H-M 'P b c n'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,-z'
  '1/2+x,1/2+y,1/2-z'
  '1/2-x,1/2-y,1/2+z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Ta   0.00000   0.16817   0.25000 ?
Al   0.00000   0.43460   0.25000   0.00557
O1   0.22200   0.31200   0.08600 ?
O2   0.26600   0.05800   0.07300 ?
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Ta 0.00628 0.00259 0.00635 0.00000 -0.00022 0.00000
O1 0.00456 0.00842 0.00728 -0.00205 -0.00032 -0.00055
O2 0.01338 0.00130 0.01040 0.00000 -0.01060 0.00000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
1.649 Å	(5)
1.837 Å	(5)
2.439 Å	(5)
2.89 Å	(8)
3.13 Å	(10)
3.64 Å	(7)
5.66 Å	(5)

Comments:

Material from Kola Peninsula, Russia

Geological EnvironmentHide

Geological Setting:

in albitized areas of highly fractionated rare element-enriched granite pegmatites

Type Occurrence of AlumotantiteHide

Type Locality:

ⓘ Vasin-Myl'k Mt, Voron'i Tundry, Murmansk Oblast, Russia

Place of Conservation of Type Material:

Geology Museum, Kola Branch, Academy of Sciences, Apatity, Russia

Geological Setting of Type Material:

albitized area of a highly fractionated rare element-enriched granite pegmatite

Associated Minerals at Type Locality:

Sosedkoite	Simpsonite	Natrotantite	Microlite Group	Cesstibtantite
Albite

Synonyms of AlumotantiteHide

IMA1980-025

Other Language Names for AlumotantiteHide

German:Alumotantit

Russian:Алюмотантит

Spanish:Alumotantita

Common AssociatesHide

Associated Minerals Based on Photo Data:

3 photos of Alumotantite associated with Simpsonite	Al₄Ta₃O₁₃(OH)
2 photos of Alumotantite associated with Tantalite-(Mn)	Mn²⁺Ta₂O₆

Related Minerals - Nickel-Strunz Grouping Hide

4.DB.05	Argutite	GeO₂	Tet. 4/mmm (4/m 2/m 2/m) : P4₂/mnm
4.DB.05	Cassiterite	SnO₂	Tet. 4/mmm (4/m 2/m 2/m) : P4₂/mnm
4.DB.05	Plattnerite	PbO₂	Tet. 4/mmm (4/m 2/m 2/m) : P4₂/mnm
4.DB.05	Pyrolusite	Mn⁴⁺O₂	Tet. 4/mmm (4/m 2/m 2/m) : P4₂/mnm
4.DB.05	Rutile	TiO₂	Tet. 4/mmm (4/m 2/m 2/m) : P4₂/mnm
4.DB.05	Tripuhyite	Fe³⁺Sb⁵⁺O₄	Tet.
4.DB.05	Tugarinovite	MoO₂	Mon. 2/m : P2₁/b
4.DB.05	Varlamoffite	(Sn,Fe)(O,OH)₂
4.DB.10	Byströmite	MgSb₂O₆	Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
4.DB.10	Tapiolite-(Fe)	Fe²⁺Ta₂O₆	Tet. 4/mmm (4/m 2/m 2/m) : P4₂/mnm
4.DB.10	Tapiolite-(Mn)	Mn²⁺Ta₂O₆	Tet. 4/mmm (4/m 2/m 2/m) : P4₂/mnm
4.DB.10	Ordoñezite	ZnSb₂O₆	Tet.
4.DB.15b	Akhtenskite	ε-Mn⁴⁺O₂	Hex. 6/mmm (6/m 2/m 2/m) : P6₃/mmc
4.DB.15c	Nsutite	(Mn⁴⁺,Mn²⁺)(O,OH)₂	Hex.
4.DB.15a	Paramontroseite	V⁴⁺O₂	Orth.
4.DB.15a	Ramsdellite	Mn⁴⁺O₂	Orth. mmm (2/m 2/m 2/m)
4.DB.20	Scrutinyite	α-PbO₂	Orth.
4.DB.25	Ishikawaite	U⁴⁺Fe²⁺Nb₂O₈	Mon.
4.DB.25	Ixiolite	(Ta,Nb,Sn,Fe,Mn)₄O₈	Orth.
4.DB.25	Samarskite-(Y)	YFe³⁺Nb₂O₈	Mon. 2/m : P2/b
4.DB.25	Srilankite	ZrTi₂O₆	Orth. mmm (2/m 2/m 2/m) : Pbcn
4.DB.25	Yttrocolumbite-(Y)	Y(U⁴⁺,Fe²⁺)Nb₂O₈
4.DB.25	Calciosamarskite	(Ca,Fe³⁺,Y)₂(Nb,Ta,Ti)₂O₈	Mon.
4.DB.25	Samarskite-(Yb)	(Yb,Y,U,Th,Ca,Fe)(Nb,Ta)₂O₈	Mon. 2/m : P2/b
4.DB.30	Ferberite	FeWO₄	Mon. 2/m : P2/b
4.DB.30	Hübnerite	MnWO₄	Mon. 2/m : P2/b
4.DB.30	Sanmartinite	(Zn,Fe)WO₄	Mon. 2/m : P2₁/b
4.DB.30	Krasnoselskite	CoWO₄	Mon.
4.DB.30	Heftetjernite	ScTaO₄	Mon. 2/m
4.DB.30	Huanzalaite	MgWO₄	Mon. 2/m : P2/b
4.DB.35	Columbite-(Fe)	Fe²⁺Nb₂O₆	Orth. mmm (2/m 2/m 2/m) : Pbcn
4.DB.35	Tantalite-(Fe)	Fe²⁺Ta₂O₆	Orth. mmm (2/m 2/m 2/m) : Pbcn
4.DB.35	Columbite-(Mn)	Mn²⁺Nb₂O₆	Orth. mmm (2/m 2/m 2/m) : Pbcn
4.DB.35	Tantalite-(Mn)	Mn²⁺Ta₂O₆	Orth. mmm (2/m 2/m 2/m) : Pbcn
4.DB.35	Columbite-(Mg)	(Mg,Fe,Mn)(Nb,Ta)₂O₆	Orth.
4.DB.35	Qitianlingite	(Fe,Mn)₂(Nb,Ta)₂WO₁₀	Orth.
4.DB.35	Magnocolumbite	(Mg,Fe,Mn)(Nb,Ta)₂O₆
4.DB.35	Tantalite-(Mg)	(Mg,Fe²⁺)(Ta,Nb)₂O₆	Orth. mmm (2/m 2/m 2/m)
4.DB.40	Ferrowodginite	Fe²⁺Sn⁴⁺Ta₂O₈	Mon.
4.DB.40	Lithiotantite	LiTa₃O₈	Mon.
4.DB.40	Lithiowodginite	LiTa₃O₈	Mon.
4.DB.40	Titanowodginite	Mn²⁺TiTa₂O₈	Mon.
4.DB.40	Wodginite	Mn²⁺Sn⁴⁺Ta₂O₈	Mon. 2/m : B2/b
4.DB.40	Ferrotitanowodginite	Fe²⁺TiTa₂O₈	Mon.
4.DB.40	Wolframowodginite	Mn(Mn,Sn,Fe,Ta)(W,Ta,Nb)₂O₈
4.DB.45	Tivanite	V³⁺TiO₃(OH)	Mon.
4.DB.50	Carmichaelite	(Ti,Cr,Fe)[O_2-x(OH)_x]	Mon. 2/m : P2₁/b
4.DB.60	Biehlite	((Sb,As)O)₂[MoO₄]	Mon.

Related Minerals - Hey's Chemical Index of Minerals Grouping Hide

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.
18.1.6	Irtyshite	Na₂(Ta,Nb)₄O₁₁	Hex.
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	A_2-mTa₂X_6-wZ_-n	Iso. m3m (4/m 3 2/m) : Fd3m
18.1.12	Belyankinite	Ca_1-2(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
18.1.19	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. 2/m : B2/b
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)_2xSn_6-3xO₁₂

Fluorescence of AlumotantiteHide

In UV light:

Bright blue cathodoluminescence

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 AlumotantiteHide

Reference List:

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)

Voloshin, A.V., Men'shikov, Y.P., Pakhomovskii, Y.A. (1981) Alumotantite and natrotantite, new tantalum minerals in granitic pegmatites. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 110: 338-345. [in Russian]

Fleischer, M., Burns, R.G., Cabri, L.J., Francis, C.A., Pabst, A. (1982) New mineral names. American Mineralogist: 67: 413-418. [abstract]

Ercit, T.S., Hawthorne, F.C., Černý, P. (1992) The crystal structure of alumotantite: its relation to the structures of simpsonite and the (Al,Ga)(Ta,Nb)O4 compounds. The Canadian Mineralogist: 30: 653-662.

Jambor, J.L., Burke, E.A.J. (1993) New mineral names. American Mineralogist: 78: 845-849.

Anthony, J. W. et al. (1997) Handbook of Mineralogy, Vol. 3, 10.

Internet Links for AlumotantiteHide

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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Localities for AlumotantiteHide

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.


Brazil
Rio Grande do Norte Equador ⓘ Alto do Giz pegmatite	http://rruff.geo.arizona.edu/doclib/hom/parabariomicrolite.pdf.; Canadian Mineralogist (1986): 24: 655-663.

DR Congo
Tanganyika ⓘ Manono-Kitotolo mine	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 ⓘ Ungursai Ta Deposit	A.V. Voloshin analytical data

Russia (TL)
Murmansk Oblast Voron'i Tundry ⓘ Vasin-Myl'k Mt (TL)	Voloshin, A.V., Men'shikov, Y.P., Pakhomovskii, Y.A. (1981) Alumotantite and natrotantite, new tantalum minerals in granitic pegmatites. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 110: 338-345.; Anthony, J.W., et al. (1997) Handbook of Mineralogy, Vol. III.; 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.

Zimbabwe
Masvingo Bikita Area ⓘ Mdara Mine	J. W. Anthony et al.: Handbook of Mineralogy, Vol. III (1997)

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Alumotantite

About AlumotantiteHide

Classification of AlumotantiteHide