Paratsepinite-Ba
A valid IMA mineral species
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About Paratsepinite-Ba
Formula:
Ba4(Ti,Nb)8(Si4O12)4(OH,O)8 · 8H2O
Colour:
Light brown
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
2.88
Crystal System:
Monoclinic
Member of:
Name:
Named according to recommended nomeclature for labuntsovite-group minerals. The 'para' (Greek for near) prefix is used for species with a doubled unit cell, tsepinite is the series root name, and the 'Ba-' suffix is for dominant barium.
Unique Identifiers
Mindat ID:
26356
Long-form identifier:
mindat:1:1:26356:2
Similar Names
| Paratsepinite-Na | A valid IMA mineral species | (Na,Sr,K,Ca)7(Ti,Nb)8(Si4O12)4(O,OH)8 · nH2O n ~ 8 |
IMA Classification of Paratsepinite-Ba
Approved
IMA Formula:
(Ba,Na,K)2-x(Ti4+,Nb5+)2(Si4O12)(OH,O)2·4H2O
Approval year:
2002
First published:
2003
Type description reference:
Chukanov, N. V., Pekov, I. V., Zadov, A. E., Rosenberg, K. A., Rastsvetaeva, R. K., Krivovichev, S. V., Levitskay, L. A. (2003) New minerals tsepinite-K (K,Ba,Na)2(Ti,Nb)2(Si4O12)(OH,O)2·3H2O and paratsepinite-Ba (Ba,Na,K)2-x(Ti,Nb)2(Si4O12)(OH,O)2·4H2O and their relationship with other labuntsovite group members. Zapiski Vserossijskogo Mineralogicheskogo Obshchestva, 132 (1) 38-51
Classification of Paratsepinite-Ba
9.CE.30b
9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions
9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions
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 |
|---|---|---|
| Ptse-Ba | 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 Paratsepinite-Ba
Vitreous
Transparency:
Transparent
Colour:
Light brown
Streak:
White
Hardness:
5 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.88 g/cm3 (Measured) 2.97 g/cm3 (Calculated)
Optical Data of Paratsepinite-Ba
Type:
Biaxial (+)
RI values:
nα = 1.667 nβ = 1.674 nγ = 1.770
2V:
Measured: 30° , Calculated: 32°
Max. Birefringence:
δ = 0.103
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:
Not observed
Pleochroism:
Not Visible
Chemistry of Paratsepinite-Ba
Mindat Formula:
Ba4(Ti,Nb)8(Si4O12)4(OH,O)8 · 8H2O
Element Weights:
Common Impurities:
Na,K
Crystallography of Paratsepinite-Ba
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 14.551(2) Å, b = 14.01(2) Å, c = 15.702(3) Å
β = 117.5(1)°
β = 117.5(1)°
Ratio:
a:b:c = 1.039 : 1 : 1.121
Unit Cell V:
2,839.32 ų (Calculated from Unit Cell)
Z:
8
Twinning:
None observed
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.11 Å | (100) |
| 4.08 Å | (80) |
| 3.95 Å | (100) |
| 3.24 Å | (90) |
| 3.11 Å | (80) |
| 2.403 Å | (80) |
| 1.914 Å | (90) |
| 1.634 Å | (80) |
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 Paratsepinite-Ba
General Appearance of Type Material:
imperfect long-prismatic light-brown crystals, up to 5 mm long
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow
Associated Minerals at Type Locality:
Reference:
Chukanov, N. V., Pekov, I. V., Zadov, A. E., Rosenberg, K. A., Rastsvetaeva, R. K., Krivovichev, S. V., Levitskay, L. A. (2003) New minerals tsepinite-K (K,Ba,Na)2(Ti,Nb)2(Si4O12)(OH,O)2·3H2O and paratsepinite-Ba (Ba,Na,K)2-x(Ti,Nb)2(Si4O12)(OH,O)2·4H2O and their relationship with other labuntsovite group members. Zapiski Vserossijskogo Mineralogicheskogo Obshchestva, 132 (1) 38-51
Synonyms of Paratsepinite-Ba
Other Language Names for Paratsepinite-Ba
Dutch:Paratsepiniet-Ba
German:Paratsepinit-Ba
Russian:Парацепинит-Ba
Simplified Chinese:水硅铌钛钡石
Traditional Chinese:水矽鈮鈦鋇石
Relationship of Paratsepinite-Ba to other Species
Member of:
Other Members of Paratsepinite Group:
| Paratsepinite-Na | (Na,Sr,K,Ca)7(Ti,Nb)8(Si4O12)4(O,OH)8 · nH2O n ~ 8 | Mon. 2/m : B2/m |
Related Minerals - Strunz-mindat Grouping
| 9.CE. | Dutkevichite-(Ce) | NaZnBa2Ce2Ti2Si8O26F · H2O |
| 9.CE. | Katanite | Ba3NbFe3Si2O14 |
| 9.CE. | Niobobaotite | Ba4(Ti2.5Fe2+1.5)Nb4Si4O28Cl |
| 9.CE. | Amaterasuite | Sr4Ti6Si4O23(OH)Cl |
| 9.CE. | Steiningerite | Ba2Zr2(Si4O12)O2 |
| 9.CE.05 | Papagoite | CaCu[H3AlSi2O9] |
| 9.CE.10 | Verplanckite | Ba4Mn2+2Si4O12(OH,H2O)3Cl3 |
| 9.CE.15 | Baotite | Ba4(Ti,Nb,W)8O16(SiO3)4Cl |
| 9.CE.20 | Nagashimalite | Ba4(V,Ti)4B2Si8O27(O,OH)2Cl |
| 9.CE.20 | Taramellite | Ba4(Fe3+,Ti,Fe2+,Mg)4(B2Si8O27)O2Clx |
| 9.CE.20 | Titantaramellite | Ba4(Ti,Fe3+,Fe2+,Mg)4(B2Si8O27)O2Clx |
| 9.CE.25 | Bario-orthojoaquinite | (Ba,Sr)4Fe2Ti2[Si4O12]2O2 · H2O |
| 9.CE.25 | Byelorussite-(Ce) | NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2O |
| 9.CE.25 | Joaquinite-(Ce) | NaBa2Ce2FeTi2[Si4O12]2O2(OH,F) · H2O |
| 9.CE.25 | Orthojoaquinite-(La) | NaBa2La2Fe2+Ti2[Si4O12]2O2(O,OH) · H2O |
| 9.CE.25 | Strontiojoaquinite | Sr2Ba2(Na,Fe)2Ti2[Si4O12]2O2(O,OH)2 · H2O |
| 9.CE.25 | Orthojoaquinite-(Ce) | NaBa2Ce2FeTi2[Si4O12]2O2(O,OH) · H2O |
| 9.CE.25 | Strontio-orthojoaquinite | (Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O |
| 9.CE.30e | Labuntsovite-Mn | Na4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10-12H2O |
| 9.CE.30b | Tsepinite-Na | Na2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O |
| 9.CE.30c | Gjerdingenite-Na | K2Na(Nb,Ti)4(Si4O12)2(OH,O)4 · 5H2O |
| 9.CE.30h | Alsakharovite-Zn | NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O |
| 9.CE.30c | Burovaite-Ca | (Na,K)4Ca2(Ti,Nb)8(Si4O12)4(OH,O)8 · 12H2O |
| 9.CE.30a | Nenadkevichite | (Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2O |
| 9.CE.30b | Tsepinite-Sr | Sr(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O |
| 9.CE.30c | Gjerdingenite-Mn | K2Mn2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O |
| 9.CE.30b | Paratsepinite-Na | (Na,Sr,K,Ca)7(Ti,Nb)8(Si4O12)4(O,OH)8 · nH2O n ~ 8 |
| 9.CE.30d | Lemmleinite-K | K2(Ti,Nb)2(Si4O12)(OH,O)2 · 4H2O |
| 9.CE.30c | Karupmøllerite-Ca | (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 7H2O |
| 9.CE.30c | Lepkhenelmite-Zn | (Ba,K)2Zn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O |
| 9.CE.30h | Gutkovaite-Mn | K2CaMn(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2O |
| 9.CE.30e | Labuntsovite-Mg | Na4K4(Ba,K)2Mg(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O |
| 9.CE.30e | Labuntsovite-Fe | Na4K4(Ba,K)2Fe2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2O |
| 9.CE.30c | Kuzmenkoite-Zn | K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4 · 6-8H2O |
| 9.CE.30f | Paralabuntsovite-Mg | Na8K8Mg4Ti16(Si4O12)8(OH,O)16 · 20-24H2O |
| 9.CE.30d | Lemmleinite-Ba | Na2K2Ba(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2O |
| 9.CE.30g | Organovaite-Mn | K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4 · 5-7H2O |
| 9.CE.30g | Organovaite-Zn | K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O |
| 9.CE.30b | Vuoriyarvite-K | K2(Nb,Ti)2(Si4O12)(O,OH)2 · 4H2O |
| 9.CE.30c | Gjerdingenite-Fe | K2Fe2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O |
| 9.CE.30a | 'Unnamed (Ca-Na-ordered analogue of Korobitsynite)' | (Ca,Na)2(Ti,Nb)2(Si4O12)(OH,O)2 · 3-4H2O |
| 9.CE.30g | Parakuzmenkoite-Fe | (K,Ba)4Fe(Ti,Nb)8(Si4O12)4(O,OH)8 · 14H2O |
| 9.CE.30a | Korobitsynite | (Na,◻)4Ti2(Si4O12)(O,OH)2 · 4H2O |
| 9.CE.30c | Kuzmenkoite-Mn | K2Mn2+(Ti,Nb)4(Si4O12)2(OH,O)4 · 5-6H2O |
| 9.CE.30b | Tsepinite-K | K2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2O |
| 9.CE.30h | Neskevaaraite-Fe | K3Na2Fe2+(Ti,Nb)4(Si4O12)2(O,OH)4 · 5-6 H2O |
| 9.CE.30c | Gjerdingenite-Ca | K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2O |
| 9.CE.30b | Tsepinite-Ca | (Ca,K,Na)2-x(Ti,Nb)2(Si4O12)(OH,O)2 · 4H2O |
| 9.CE.45 | 'Natrokomarovite' | (Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2O |
| 9.CE.45 | Komarovite | (Ca,Mn)(Nb,Ti)2[Si2O7](O,F)3 · 3.5H2O |
Fluorescence of Paratsepinite-Ba
Nonfluorescent
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 Paratsepinite-Ba
mindat.org URL:
https://www.mindat.org/min-26356.html
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References for Paratsepinite-Ba
Reference List:
Chukanov, Nikita V., Pekov, Igor V., Khomyakov, Alexander P. (2002) Recommended nomenclature for labuntsovite-group minerals. European Journal of Mineralogy, 14 (1) 165-173 doi:10.1127/0935-1221/2002/0014-0165
Chukanov, N. V., Pekov, I. V., Zadov, A. E., Rosenberg, K. A., Rastsvetaeva, R. K., Krivovichev, S. V., Levitskay, L. A. (2003) New minerals tsepinite-K (K,Ba,Na)2(Ti,Nb)2(Si4O12)(OH,O)2·3H2O and paratsepinite-Ba (Ba,Na,K)2-x(Ti,Nb)2(Si4O12)(OH,O)2·4H2O and their relationship with other labuntsovite group members. Zapiski Vserossijskogo Mineralogicheskogo Obshchestva, 132 (1) 38-51
Localities for Paratsepinite-Ba
Showing 2 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.
Russia | |
| Pekov et al. (2005) |
| Pekov (2003) |
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Lepkhe-Nel'm Mt, Seidozero Lake, Lovozersky District, Murmansk Oblast, Russia