Tantalite
A discredited species name
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About Tantalite
Formula:
(Mn,Fe)(Ta,Nb)2O6
An obsolete group name for minerals with the general formula (Mn,Fe)(Ta,Nb)2O6, equivalent to the Tantalite-(Fe)-Tantalite-(Mn) Series. Generally mangan-dominant members are more abundant in nature. Many specimens called tantalite actually belong to the columbite series or tapiolite series.
Visit gemdat.org for gemological information about Tantalite.
Visit gemdat.org for gemological information about Tantalite.Unique Identifiers
Mindat ID:
3882
Long-form identifier:
mindat:1:1:3882:5
Similar Names
| Cantalite | A variety of | |
| Taltalite | A synonym of Tourmaline | |
| Tantalite (of Arppe) | A synonym of 'Tapiolite' | |
| Tantalite-(Fe) | A valid IMA mineral species | Fe2+Ta2O6 |
| Tantalite-(Fe)-Tantalite-(Mn) Series | A solid-solution series between two end-member minerals | |
| Tantalite-(Mg) | A valid IMA mineral species | (Mg,Fe2+)(Ta,Nb)2O6 |
| Tantalite-(Mn) | A valid IMA mineral species - grandfathered | Mn2+Ta2O6 |
| Tautalite | A synonym of Allanite Group |
IMA Classification of Tantalite
Discredited
Classification of Tantalite
18.1.45
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
Chemistry of Tantalite
Mindat Formula:
(Mn,Fe)(Ta,Nb)2O6
Element Weights:
Crystallography of Tantalite
Morphology:
Short prismatic [001]; less commonly [100] or [010]; also equant. Often rectangular prisms with the pinacoids prominent. Thin tabular {010} or thick tabular {100} at times. Less often pyramidal, and then with {111} dominant. In large groups of parallel or subparallel crystals. Massive.
Twinning:
1. Twin plane {201} common. Usually contact twins, heart-shaped and exhibiting a delicate featherlike striation on {010}; also penetration twins. Sometimes repeated yielding pseudohexagonal trillings. 2. Twin plane {203} rare. Heart-shaped contact twins striated on {010}; repeated at times, yielding pseudohexagonal trillings. 3. Twin plane {501}, rare. 4. Twin plane {1·50·0}, rare.
Synonyms of Tantalite
Other Language Names for Tantalite
Common Associates
Associations Based on Photo Data:
| 10 photos of Tantalite associated with Quartz | SiO2 |
| 9 photos of Tantalite associated with 'Adularia' | KAlSi3O8 |
| 8 photos of Tantalite associated with Microlite Group | A2-mTa2X6-wZ1-n |
| 7 photos of Tantalite associated with Albite | Na(AlSi3O8) |
| 4 photos of Tantalite associated with Muscovite | KAl2(AlSi3O10)(OH)2 |
| 3 photos of Tantalite associated with Beryl | Be3Al2(Si6O18) |
| 3 photos of Tantalite associated with Microcline | K(AlSi3O8) |
| 3 photos of Tantalite associated with 'Opal-AN' | SiO2 · nH2O |
| 3 photos of Tantalite associated with Lepidolite | |
| 3 photos of Tantalite associated with Cookeite | (LiAl4◻)[AlSi3O10](OH)8 |
Other Information
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 Tantalite
mindat.org URL:
https://www.mindat.org/min-3882.html
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Please feel free to link to this page.
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References for Tantalite
Reference List:
Localities for Tantalite
Showing 624 localities.
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The 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).
All localities listed without proper references should be considered as questionable.
São Pedro claim, Malacacheta, Minas Gerais, Brazil