Lithiotantite
A valid IMA mineral species
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About Lithiotantite
Formula:
LiTa3O8
Colour:
Colourless
Lustre:
Adamantine
Hardness:
6 - 6½
Specific Gravity:
7.0
Crystal System:
Monoclinic
Member of:
Name:
Named for its composition, containing LITHIum and TANTalum.
Dimorph of:
Corresponds to the low-temperature form of synthetic LiTa3O8.
Unique Identifiers
Mindat ID:
2390
Long-form identifier:
mindat:1:1:2390:6
GUID
(UUID V4):
(UUID V4):
4e484a85-08bc-4bfa-9d8f-a8cec0397807
IMA Classification of Lithiotantite
Approved
First published:
1983
Classification of Lithiotantite
4.DB.40
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
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
8.7.7.1
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
7 : Miscellaneous
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
7 : Miscellaneous
18.1.1
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
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Ltan | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Lithiotantite
Adamantine
Transparency:
Transparent
Colour:
Colourless
Comment:
creamy pink to brownish pink when included by cassiterite
Streak:
White
Hardness:
6 - 6½ on Mohs scale
Hardness:
VHN40=1200 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven, Conchoidal
Density:
7.0 g/cm3 (Measured) 7.08 g/cm3 (Calculated)
Optical Data of Lithiotantite
Type:
Biaxial
Anisotropism:
Weak
Dispersion:
Strong
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
486nm | 18.6% | 18.5% |
553nm | 18.5% | 18.3% |
589nm | 18.6% | 18.3% |
656nm | 19.1% | 19.0% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 19.1%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Grayish-white
Pleochroism:
Non-pleochroic
Comments:
n = >1.9
Chemistry of Lithiotantite
Mindat Formula:
LiTa3O8
Elements listed:
Crystallography of Lithiotantite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 7.444 Å, b = 5.044 Å, c = 15.255 Å
β = 107.18°
β = 107.18°
Ratio:
a:b:c = 1.476 : 1 : 3.024
Unit Cell V:
547.23 ų (Calculated from Unit Cell)
Z:
4
Crystal Structure
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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) |
---|---|---|---|---|---|---|---|
0018780 | Lithiotantite | Menezes L A D, Yang H, Downs R T, Chaves M L S C, Persiano A C (2012) Lithiotantite, ideally LiTa3O8 Acta Crystallographica E68 i27-i28 | 2012 | Murundu mine, the Jenipapo District, Itinga, Minas Gerais, Brazil | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.96 Å | (100) |
1.722 Å | (80) |
1.451 Å | (80) |
1.772 Å | (60b) |
4.13 Å | (50) |
2.490 Å | (50) |
1.900 Å | (50) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4b: Highly evolved igneous rocks | >3.0 |
34 : Complex granite pegmatites |
Type Occurrence of Lithiotantite
General Appearance of Type Material:
Equant, poorly formed crystals up to 0.4 mm.
Place of Conservation of Type Material:
Mining Institute, St. Petersburg, Russia, 1655/1.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 82543.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 82543.
Geological Setting of Type Material:
Granite pegmatite
Associated Minerals at Type Locality:
Reference:
Voloshin, A.V., Pakhomovskii, Y.A., Stepanov, V.I., Tyusheva, F.N. (1983) Lithiotantite Li(Ta,Nb)3O8 - a new mineral from granite pegmatites in Eastern Kazakhstan. Mineralogiceskij Zhurnal: 5: 91-95.
Synonyms of Lithiotantite
Other Language Names for Lithiotantite
German:Lithiotantit
Spanish:Lithiotantita
Relationship of Lithiotantite to other Species
Member of:
Other Members of this group:
Achalaite | (Fe2+,Mn)(Ti,Fe3+,Ta)(Nb,Ta)2O8 | Mon. 2/m : B2/b |
Ferrotitanowodginite | Fe2+TiTa2O8 | Mon. 2/m : B2/b |
Ferrowodginite | Fe2+Sn4+Ta2O8 | Mon. 2/m : B2/b |
Lithiowodginite | LiTa3O8 | Mon. 2/m : B2/b |
Tantalowodginite | (Mn2+0.5◻0.5)TaTa2O8 | Mon. 2/m : B2/b |
Titanowodginite | Mn2+TiTa2O8 | Mon. 2/m : B2/b |
Wodginite | Mn2+Sn4+Ta2O8 | Mon. 2/m : B2/b |
Common Associates
Associated Minerals Based on Photo Data:
6 photos of Lithiotantite associated with Cassiterite | SnO2 |
5 photos of Lithiotantite associated with Albite | Na(AlSi3O8) |
5 photos of Lithiotantite associated with Thoreaulite | Sn2+Ta2O6 |
4 photos of Lithiotantite associated with Rankamaite | (Na,K)3(Ta,Nb,Al)11(O,OH)31 |
1 photo of Lithiotantite associated with Wodginite | Mn2+Sn4+Ta2O8 |
Related Minerals - Strunz-mindat Grouping
4.DB. | Nioboheftetjernite | ScNbO4 |
4.DB. | Shakhdaraite-(Y) | ScYNb2O8 |
4.DB. | Nioboixiolite-(Mn2+) | (Nb0.67Mn2+0.33)O2 |
4.DB. | Nioboixiolite-([]) | (Nb0.8◻0.2)4+O2 |
4.DB.05 | Argutite | GeO2 |
4.DB.05 | Cassiterite | SnO2 |
4.DB.05 | Plattnerite | PbO2 |
4.DB.05 | Pyrolusite | Mn4+O2 |
4.DB.05 | Rutile | TiO2 |
4.DB.05 | Tripuhyite | Fe3+Sb5+O4 |
4.DB.05 | Tugarinovite | MoO2 |
4.DB.05 | Varlamoffite | (Sn,Fe)(O,OH)2 |
4.DB.10 | Byströmite | MgSb2O6 |
4.DB.10 | Tapiolite-(Fe) | Fe2+Ta2O6 |
4.DB.10 | Tapiolite-(Mn) | Mn2+Ta2O6 |
4.DB.10 | Ordoñezite | ZnSb2O6 |
4.DB.10 | Tredouxite | NiSb2O6 |
4.DB.15b | Akhtenskite | ε-Mn4+O2 |
4.DB.15c | Nsutite | (Mn4+,Mn2+)(O,OH)2 |
4.DB.15a | Paramontroseite | V4+O2 |
4.DB.15a | Ramsdellite | Mn4+O2 |
4.DB.20 | Scrutinyite | α-PbO2 |
4.DB.25 | Ishikawaite | U4+Fe2+Nb2O8 |
4.DB.25 | Samarskite-(Y) | YFe3+Nb2O8 |
4.DB.25 | Srilankite | ZrTi2O6 |
4.DB.25 | Yttrocolumbite-(Y) | Y(U4+,Fe2+)Nb2O8 |
4.DB.25 | Calciosamarskite | (Ca,U4+)Fe3+(Nb,Ta,Ti)2O8 |
4.DB.25 | Samarskite-(Yb) | YbFe3+(Nb,Ta)2O8 |
4.DB.25 | Ixiolite-(Fe2+) | (Ta0.67Fe2+0.33)O2 |
4.DB.25 | Ixiolite-(Mn2+) | (Ta0.67Mn2+0.33)O2 |
4.DB.30 | Ferberite | FeWO4 |
4.DB.30 | Hübnerite | MnWO4 |
4.DB.30 | Sanmartinite | (Zn,Fe)WO4 |
4.DB.30 | Krasnoselskite | CoWO4 |
4.DB.30 | Heftetjernite | ScTaO4 |
4.DB.30 | Huanzalaite | MgWO4 |
4.DB.30 va | Wolframite Group | |
4.DB.30 | Rossovskyite | (Fe3+,Ta)(Nb,Ti)O4 |
4.DB.35 | Columbite-(Fe) | Fe2+Nb2O6 |
4.DB.35 | Tantalite-(Fe) | Fe2+Ta2O6 |
4.DB.35 | Columbite-(Mn) | Mn2+Nb2O6 |
4.DB.35 | Tantalite-(Mn) | Mn2+Ta2O6 |
4.DB.35 | Columbite-(Mg) | (Mg,Fe,Mn)(Nb,Ta)2O6 |
4.DB.35 | Qitianlingite | (Fe,Mn)2(Nb,Ta)2WO10 |
4.DB.35 | Tantalite-(Mg) | (Mg,Fe2+)(Ta,Nb)2O6 |
4.DB.40 | Ferrowodginite | Fe2+Sn4+Ta2O8 |
4.DB.40 | Lithiowodginite | LiTa3O8 |
4.DB.40 | Titanowodginite | Mn2+TiTa2O8 |
4.DB.40 | Wodginite | Mn2+Sn4+Ta2O8 |
4.DB.40 | Ferrotitanowodginite | Fe2+TiTa2O8 |
4.DB.40 | Tantalowodginite | (Mn2+0.5◻0.5)TaTa2O8 |
4.DB.40 | Wolframowodginite | Mn(Mn,Sn,Fe,Ta)(W,Ta,Nb)2O8 |
4.DB.45 | Tivanite | V3+TiO3(OH) |
4.DB.50 | Carmichaelite | (Ti,Cr,Fe)[O2-x(OH)x] |
4.DB.55 | Alumotantite | AlTaO4 |
4.DB.60 | Biehlite | ((Sb,As)O)2[MoO4] |
Fluorescence of Lithiotantite
None
Other Information
Notes:
Weak 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.
Internet Links for Lithiotantite
mindat.org URL:
https://www.mindat.org/min-2390.html
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References for Lithiotantite
Reference List:
Localities for Lithiotantite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Brazil | |
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DR Congo | |
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Kazakhstan | |
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Ognevka Ta deposit, Ulan District, East Kazakhstan Region, Kazakhstan