Ternovite
A valid IMA mineral species
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About Ternovite
Formula:
(Mg,Ca)Nb4O11 · nH2O
Colour:
White
Lustre:
Silky
Hardness:
3
Specific Gravity:
2.95
Crystal System:
Monoclinic
Member of:
Name:
Named after Vladimir Ivanovich Ternov (Владимир Иванович Тернов) (1928–1980), economic geologist, a pioneer in studies of the Kovdor phlogopite deposit.
This page provides mineralogical data about Ternovite.
Unique Identifiers
Mindat ID:
7331
Long-form identifier:
mindat:1:1:7331:4
Similar Names
| Terranovaite | A valid IMA mineral species | (Na,Ca)8(Si68Al12)O160 · 29H2O |
IMA Classification of Ternovite
Approved
IMA Formula:
MgNb5+4O11·8-12H2O
Approval year:
1992
First published:
1997
Type description reference:
Subbotin, Viktor V., Voioshin, Anatolii V., Pakhomovskii, Yakov A., Men'shikov, Yurii P., Subbotina, Galina F. (1997) Ternovite, (Mg,Ca)Nb4O11 · nH2O, a new mineral and other hydrous tetraniobates from carbonatites of the Vuoriyarvi massif, Kola Peninsula, Russia. Neues Jahrbuch für Mineralogie - Monatshefte, 1997 (2) 49-60 doi:10.1127/njmm/1997/1997/49
Classification of Ternovite
4.FM.15
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
M : Hydroxides with H2O +- (OH); unclassified
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
M : Hydroxides with H2O +- (OH); unclassified
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 for Standard |
|---|---|---|
| Tno | 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 Ternovite
Silky
Transparency:
Translucent
Colour:
White
Streak:
White
Hardness:
3 on Mohs scale
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
2.95(2) g/cm3 (Measured) 2.99(1) g/cm3 (Calculated)
Optical Data of Ternovite
Type:
Biaxial (-)
RI values:
nα = 1.725(3) nβ = 1.830(5) nγ = 1.845(5)
2V:
Measured: 39° , Calculated: 39.5°
Max. Birefringence:
δ = 0.120
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
none
Optical Extinction:
Parallel extinction
Chemistry of Ternovite
Mindat Formula:
(Mg,Ca)Nb4O11 · nH2O
Element Weights:
Crystallography of Ternovite
Crystal System:
Monoclinic
Cell Parameters:
a = 20.656 Å, b = 13.062 Å, c = 6.338 Å
β = 91.90°
β = 91.90°
Ratio:
a:b:c = 1.581 : 1 : 0.485
Unit Cell V:
1,709.11 ų (Calculated from Unit Cell)
Z:
4
Comment:
Point Group: n.d.; Space Group: n.d.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.33 Å | (100) |
| 5.16 Å | (7) |
| 4.56 Å | (8) |
| 3.15 Å | (17) |
| 3.12 Å | (15) |
| 3.06 Å | (7) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Ternovite
General Appearance of Type Material:
White spherulites, to 0.5 mm in diameter, consisting of radiating blades averaging 0.1 x 0.003 x 0.005 mm.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Moscow, Russia.
Geological Setting of Type Material:
Late-stage hydrothermal mineral in dissolution voids that formed as a result of dolomitization of pyrochlore-bearing calcite carbonatites.
Associated Minerals at Type Locality:
Reference:
Subbotin, Viktor V., Voioshin, Anatolii V., Pakhomovskii, Yakov A., Men'shikov, Yurii P., Subbotina, Galina F. (1997) Ternovite, (Mg,Ca)Nb4O11 · nH2O, a new mineral and other hydrous tetraniobates from carbonatites of the Vuoriyarvi massif, Kola Peninsula, Russia. Neues Jahrbuch für Mineralogie - Monatshefte, 1997 (2) 49-60 doi:10.1127/njmm/1997/1997/49
Synonyms of Ternovite
Other Language Names for Ternovite
Relationship of Ternovite to other Species
Member of:
Other Members of Franconite Group:
| Franconite | Na(Nb2O5)(OH) · 3H2O | Mon. |
| Hochelagaite | (Ca,Na,Sr)(Nb,Ti,Si,Al)4O11 · 8H2O | Mon. |
Related Minerals - Strunz-mindat Grouping
| 4.FM. | Charleshatchettite | CaNb4O10(OH)2 · 8H2O |
| 4.FM.15 | Franconite | Na(Nb2O5)(OH) · 3H2O |
| 4.FM.15 | Hochelagaite | (Ca,Na,Sr)(Nb,Ti,Si,Al)4O11 · 8H2O |
| 4.FM.25 | Belyankinite | Ca1-2(Ti,Zr,Nb)5O12 · 9H2O (?) |
| 4.FM.25 | Gerasimovskite | Mn2+(Nb,Ti)5O12 · 9H2O (?) |
| 4.FM.25 | Manganbelyankinite | Mn2+(Ti,Nb)5O12 · 9H2O |
| 4.FM.30 | Silhydrite | Si3O6 · H2O |
| 4.FM.35 | Cuzticite | Fe3+2(TeO6) · 3H2O |
| 4.FM.50 | Qatranaite | CaZn2(OH)6(H2O)2 |
| 4.FM.55 | 'Hydroplumbite' | 3PbO · H2O |
Other Information
IR Spectrum:
The infrared spectrum has a general similarity to that of franconite.
Notes:
Insoluble in dilute HCl.
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 Ternovite
mindat.org URL:
https://www.mindat.org/min-7331.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Ternovite
Reference List:
Subbotin, Viktor V., Voioshin, Anatolii V., Pakhomovskii, Yakov A., Men'shikov, Yurii P., Subbotina, Galina F. (1997) Ternovite, (Mg,Ca)Nb4O11 · nH2O, a new mineral and other hydrous tetraniobates from carbonatites of the Vuoriyarvi massif, Kola Peninsula, Russia. Neues Jahrbuch für Mineralogie - Monatshefte, 1997 (2) 49-60 doi:10.1127/njmm/1997/1997/49
Localities for Ternovite
Showing 3 localities.
symbol to view information about a locality.
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.
Russia | |
| Liferovich et al. (1998) |
| Ivanyuk et al. (2006) |
| Subbotin et al. (1997) +1 other reference |
Quick NavTopAbout TernoviteUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsStrunz-MindatOther InformationInternet Links References Localities Locality List
Kovdor Massif, Kovdorsky District, Murmansk Oblast, Russia