Baratovite
A valid IMA mineral species
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About Baratovite
Rauf B. Baratov
Formula:
KCa7(Ti,Zr)2Li3Si12O36F2
Colour:
White, colorles, pink
Lustre:
Vitreous, Pearly
Hardness:
5 - 6
Specific Gravity:
2.92
Crystal System:
Monoclinic
Name:
Named in honor of Rauf Baratovich Baratov (Рауф Баратович Баратов) (10 October 1921, Pulatan, Turkestan (now Tajikistan) - 15 January 2013, Kazan, Russia), petrologist, Institute of Geology, Dushanbe, Tajikistan.
Note: Some mineralogists consider baratovite to be OH-dominant, which would make katayamalite the same species, with the name baratovite having priority.
The Ti analogue of Aleksandrovite.
The Ti analogue of Aleksandrovite.
Unique Identifiers
Mindat ID:
512
Long-form identifier:
mindat:1:1:512:6
IMA Classification of Baratovite
Approved
IMA Formula:
KLi3Ca7Ti4+2(SiO3)12F2
Approval year:
1974
First published:
1975
Classification of Baratovite
9.CJ.25
9 : SILICATES (Germanates)
C : Cyclosilicates
J : [Si6O18]12- 6-membered single rings (sechser-Einfachringe), without insular complex anions
9 : SILICATES (Germanates)
C : Cyclosilicates
J : [Si6O18]12- 6-membered single rings (sechser-Einfachringe), without insular complex anions
61.1.4.2
61 : CYCLOSILICATES Six-Membered Rings
1 : Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
61 : CYCLOSILICATES Six-Membered Rings
1 : Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
14.9.32
14 : Silicates not Containing Aluminum
9 : Silicates of Ti
14 : Silicates not Containing Aluminum
9 : Silicates of Ti
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 |
|---|---|---|
| Btv | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Baratovite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Physical Properties of Baratovite
Vitreous, Pearly
Comment:
Pearly on cleavage
Colour:
White, colorles, pink
Hardness:
5 - 6 on Mohs scale
Hardness:
VHN100=615 kg/mm2 - Vickers
Comment:
615 on basal plane 715 to to 620 on cleavage planes. Original description of Mohs hardness was 3-3.5
Tenacity:
Brittle
Cleavage:
Perfect
Two directions crossing basal plane.
Two directions crossing basal plane.
Density:
2.92(2) g/cm3 (Measured) 2.91 g/cm3 (Calculated)
Optical Data of Baratovite
Type:
Biaxial (+)
RI values:
nα = 1.674 nβ = 1.671 nγ = 1.666
2V:
Measured: 60°
Max. Birefringence:
δ = 0.000
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:
Moderate
Dispersion:
r > v strong
Optical Extinction:
X ∧ ⊥ (001) ≃ 50°.
Chemistry of Baratovite
Mindat Formula:
KCa7(Ti,Zr)2Li3Si12O36F2
Element Weights:
Common Impurities:
Fe,Nb,Mn,Na
Crystallography of Baratovite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 16.94 Å, b = 9.74 Å, c = 20.9 Å
β = 112.5°
β = 112.5°
Ratio:
a:b:c = 1.739 : 1 : 2.146
Unit Cell V:
3,185.91 ų (Calculated from Unit Cell)
Crystal Structure
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Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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2x2x2 | 3x3x3 | 4x4x4
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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) |
|---|---|---|---|---|---|---|---|
| 0006461 | Baratovite | Baur W H, Kassner D (1992) Katayamalite and baratovite are structurally identical European Journal of Mineralogy 4 839-841 | 1992 | 0 | 293 | ||
| 0000712 | Baratovite | Menchetti S, Sabelli C (1979) The crystal structure of baratovite American Mineralogist 64 383-389 |  | 1979 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.22 Å | (100) |
| 2.41 Å | (20) |
| 1.92 Å | (17) |
| 3.02 Å | (5) |
| 3.54 Å | (4) |
| 1.60 Å | (4) |
| 1.49 Å | (4) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) |
Type Occurrence of Baratovite
General Appearance of Type Material:
Off-white platy deposits up to 5 x 2 x 0.5 cm in size.
Place of Conservation of Type Material:
Mineralogical Museum, University of St. Petersburg, St. Petersburg, Russia, 16250-16252.
Institute of Mineralogy and Geochemistry of Rare Elements, Moscow, Russia.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 76077, 77839, vis5062.
Institute of Mineralogy and Geochemistry of Rare Elements, Moscow, Russia.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 76077, 77839, vis5062.
Geological Setting of Type Material:
In quartz-albite-aegirine veinlets and in albitites in syenite.
Associated Minerals at Type Locality:
Synonyms of Baratovite
Other Language Names for Baratovite
Dutch:Baratoviet
German:Baratovit
Russian:Баратовит
Simplified Chinese:硅钛锂钙石
Spanish:Baratovita
Traditional Chinese:矽鈦鋰鈣石
Common Associates
Associations Based on Photo Data:
| 11 photos of Baratovite associated with Aegirine | NaFe3+Si2O6 |
| 5 photos of Baratovite associated with Agrellite | NaCa2Si4O10F |
| 3 photos of Baratovite associated with Quartz | SiO2 |
| 2 photos of Baratovite associated with Albite | Na(AlSi3O8) |
| 2 photos of Baratovite associated with Microcline | K(AlSi3O8) |
| 2 photos of Baratovite associated with Miserite | K1.5-x(Ca,Y,REE)5(Si6O15)(Si2O7)(OH,F)2 · yH2O |
| 1 photo of Baratovite associated with Orlovite | KLi2Ti(Si4O10)OF |
| 1 photo of Baratovite associated with Fluorite | CaF2 |
| 1 photo of Baratovite associated with Pyrochlore Group | A2Nb2(O,OH)6Z |
Related Minerals - Strunz-mindat Grouping
| 9.CJ. | Zolotarevite | Na5Zr[Si6O15(OH)3] · 3H2O |
| 9.CJ. | 'Avdeevite' | NaAl4(Be5Li)(Si6O18)2(H2O)1-2 |
| 9.CJ. | 'Beryllocordierite-Na' | NaMg4(Al5Be)(AlSi5O18)2 · 2H2O |
| 9.CJ. | Sachanbińskiite | NaMn4(Al5Be)(AlSi5O18)2 · 2H2O |
| 9.CJ. | Nakkaalaaqite | K2[Na3Ca]LiCa2Ti2Be4Si12O38 |
| 9.CJ.05 | Johnkoivulaite-(Cs) | Cs[Be2B]Mg2Si6O18 |
| 9.CJ.05 | Beryl | Be3Al2(Si6O18) |
| 9.CJ.05 | Bazzite | Be3Sc2(Si6O18) |
| 9.CJ.05 | Ferroindialite | (Fe2+,Mg)2Al4Si5O18 |
| 9.CJ.05 va | 'Vorobyevite' | Be3Al2(Si6O18) |
| 9.CJ.05 | Stoppaniite | Be3Fe3+2(Si6O18) · H2O |
| 9.CJ.05 | Indialite | Mg2Al3(AlSi5O18) |
| 9.CJ.10 | Sekaninaite | Fe2+2Al4Si5O18 |
| 9.CJ.10 | Cordierite | Mg2Al4Si5O18 |
| 9.CJ.15a | Zirsinalite | Na6(Ca,Mn2+,Fe2+)Zr(Si6O18) |
| 9.CJ.15a | Kapustinite | Na6ZrSi6O16(OH)2 |
| 9.CJ.15a | Townendite | Na8ZrSi6O18 |
| 9.CJ.15a | Combeite | Na4.5Ca3.5Si6O17.5(OH)0.5 |
| 9.CJ.15a | Kazakovite | Na6Mn2+Ti(Si6O18) |
| 9.CJ.15a | Tisinalite | Na3H3(Mn,Ca,Fe)TiSi6(O,OH)18 · 2H2O |
| 9.CJ.15a | Lovozerite | Na2Ca(Zr,Ti)(Si6O12)[(OH)4O2] · H2O |
| 9.CJ.15a | Litvinskite | Na2(◻,Na,Mn)ZrSi6O12(OH,O)6 |
| 9.CJ.15c | Koashvite | Na6(Ca,Mn)(Ti,Fe)Si6O18 · H2O |
| 9.CJ.15b | Imandrite | Na12Ca3Fe3+2(Si6O18)2 |
| 9.CJ.25 | Aleksandrovite | KCa7Sn2Li3Si12O36F2 |
| 9.CJ.25 | Katayamalite | KLi3Ca7Ti2(SiO3)12(OH)2 |
| 9.CJ.30 | Dioptase | CuSiO3 · H2O |
| 9.CJ.35 | Kostylevite | K2Zr(Si3O9) · H2O |
| 9.CJ.40 | Petarasite | Na5Zr2(Si6O18)(Cl,OH) · 2H2O |
| 9.CJ.45 | Gerenite-(Y) | (Ca,Na)2(Y,REE)3Si6O18 · 2H2O |
| 9.CJ.50 | Odintsovite | K2Na4Ca3Ti2Be4Si12O38 |
| 9.CJ.55 | Mathewrogersite | Pb7FeAl3GeSi12O36(OH,H2O)6 |
| 9.CJ.60 | Pezzottaite-(Cs) | Cs(Be2Li)Al2(Si6O18) |
Radioactivity
Radioactivity:
| Element | % Content | Activity (Bq/kg) | Radiation Type |
|---|---|---|---|
| Uranium (U) | 0.0000% | 0 | α, β, γ |
| Thorium (Th) | 0.0000% | 0 | α, β, γ |
| Potassium (K) | 2.8185% | 874 | β, γ |
For comparison:
- Banana: ~15 Bq per fruit
- Granite: 1,000–3,000 Bq/kg
- EU exemption limit: 10,000 Bq/kg
Note: Risk is shown relative to daily recommended maximum exposure to non-background radiation of 1000 µSv/year. Note that natural background radiation averages around 2400 µSv/year so in reality these risks are probably extremely overstated! With infrequent handling and safe storage natural radioactive minerals do not usually pose much risk.
Interactive Simulator:
Note: The mass selector refers to the mass of radioactive mineral present, not the full specimen, also be aware that the matrix may also be radioactive, possibly more radioactive than this mineral!
Activity: –
| Distance | Dose rate | Risk |
|---|---|---|
| 1 cm | ||
| 10 cm | ||
| 1 m |
The external dose rate (D) from a radioactive mineral is estimated by summing the gamma radiation contributions from its Uranium, Thorium, and Potassium content, disregarding daughter-product which may have a significant effect in some cases (eg 'pitchblende'). This involves multiplying the activity (A, in Bq) of each element by its specific gamma ray constant (Γ), which accounts for its unique gamma emissions. The total unshielded dose at 1 cm is then scaled by the square of the distance (r, in cm) and multiplied by a shielding factor (μshield). This calculation provides a 'worst-case' or 'maximum risk' estimate because it assumes the sample is a point source and entirely neglects any self-shielding where radiation is absorbed within the mineral itself, meaning actual doses will typically be lower. The resulting dose rate (D) is expressed in microsieverts per hour (μSv/h).
D = ((AU × ΓU) + (ATh × ΓTh) + (AK × ΓK)) / r2 × μshield
Fluorescence of Baratovite
bright blue fluorescent response under short wave UV
see for example https://www.mindat.org/photo-852637.html
see for example https://www.mindat.org/photo-852637.html
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 Baratovite
mindat.org URL:
https://www.mindat.org/min-512.html
Please feel free to link to this page.
Please feel free to link to this page.
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Mineral Dealers:
References for Baratovite
Reference List:
Fleischer, Michael, Pabst, Adolf, Cabri, Louis J. (1976) New Mineral Names. American Mineralogist, 61 (9-10) 1053-1056
Menchetti, Silvio, Sabelli, Cesare (1979) The crystal structure of baratovite. American Mineralogist, 64 (3-4) 383-389
Localities for Baratovite
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.
Japan | |
| Murakami et al. (1983) +2 other references |
Kyrgyzstan | |
| Pavel M. Kartashov (n.d.) +1 other reference |
Tajikistan (TL) | |
| Dusmatov et al. (1975) +5 other references |
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Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan