Paravinogradovite
A valid IMA mineral species
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About Paravinogradovite
Formula:
Na1-2(Ti,Fe3+)4(Si2O6)2(AlSi3O10)(OH)4 · H2O
Colour:
Colourless to white
Lustre:
Vitreous, Pearly
Hardness:
5
Specific Gravity:
2.77
Crystal System:
Triclinic
Name:
For its structural relation to vinogradovite. First described by Khomyakov (1990,1995) as a potential new species, designated as M48, a vinogradovite-like mineral. It was first collected by him in 1986 and by Pavel M. Kartashov in 1988 from the central part of the Khibina alkaline massif, Kola, Russia. Described as a new mineral by Khomyakov et al. (2003).
A secondary mineral formed from vinogradovite (Khomyakov et al. 2003).
Unique Identifiers
Mindat ID:
25599
Long-form identifier:
mindat:1:1:25599:8
GUID
(UUID V4):
(UUID V4):
736d39d8-b24f-465d-80e3-a35fe2ae3f06
IMA Classification of Paravinogradovite
Approved
IMA Formula:
(Na,◻)2(Ti4+,Fe3+)4(Si2O6)2(Si3AlO10)(OH)4 · H2O
Approval year:
2002
First published:
1990
Type description reference:
Khomyakov, A. P., Kulikova, I. E., Sokolova, E., Hawthorne, F. C., Kartashov, P. M. (2003) Paravinogradovite, (Na,◻)2[(Ti4+,Fe3+)4{Si2O6}2{Si3AlO10}(OH)4]H2O, a new mineral species from the Khibina Alkaline Massif, Kola Peninsula, Russia: description and crystal structure. The Canadian Mineralogist, 41 (4) 989-1002 doi:10.2113/gscanmin.41.4.989
Classification of Paravinogradovite
9.DB.25
9 : SILICATES (Germanates)
D : Inosilicates
B : Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals
9 : SILICATES (Germanates)
D : Inosilicates
B : Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals
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 |
---|---|---|
Pvgd | 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 Paravinogradovite
Vitreous, Pearly
Colour:
Colourless to white
Streak:
White
Hardness:
5 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {001} and indistinct {010}
Perfect on {001} and indistinct {010}
Fracture:
Splintery
Density:
2.77(2) g/cm3 (Measured) 2.76 g/cm3 (Calculated)
Optical Data of Paravinogradovite
Type:
Biaxial (-)
RI values:
nα = 1.707(2) nβ = 1.741(2) nγ = 1.755(2)
2V:
Measured: 64° (1), Calculated: 64°
Max Birefringence:
δ = 0.048
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v
Optical Extinction:
b ≈ Z, a ∧ X = 30°
Pleochroism:
Non-pleochroic
Comments:
Negative elongation
Chemistry of Paravinogradovite
Mindat Formula:
Na1-2(Ti,Fe3+)4(Si2O6)2(AlSi3O10)(OH)4 · H2O
Crystallography of Paravinogradovite
Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Cell Parameters:
a = 5.253 Å, b = 8.741 Å, c = 12.95 Å
α = 70.46°, β = 78.47°, γ = 89.93°
α = 70.46°, β = 78.47°, γ = 89.93°
Ratio:
a:b:c = 0.601 : 1 : 1.482
Unit Cell V:
547.68 ų (Calculated from Unit Cell)
Morphology:
Slender to acicular prismatic crystals.
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) |
---|---|---|---|---|---|---|---|
0005880 | Paravinogradovite | Khomyakov A P, Kulikova I E, Sokolova E V, Hawthorne F C, Kartashov P M (2003) Paravinogradovite, (Na,_)2[(Ti,Fe)4{Si2O6}2{Si3AlO10}(OH)4]H2O, a new mineral species from the Khibina Alkaline Massif, Kola Penninsula, Russia: Description and crystal structure The Canadian Mineralogist 41 989-1002 | 2003 | Khibina Alkaline Massif, Kola Penninsula, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
11.9 Å | (60) |
5.88 Å | (65) |
3.18 Å | (100) |
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 Paravinogradovite
General Appearance of Type Material:
Fan-shaped aggregates of slender to acicular prismatic crystals to 10 mm, pseudomorphing vinogradovite.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia (2883/1).
Geological Setting of Type Material:
In vugs of an albite rich pegmatite lens.
Associated Minerals at Type Locality:
Reference:
Khomyakov, A.P., Kulikova, I.E., Sokolova, E.V., Hawthorne, F.C., Kartashov, P.M. (2003): Paravinogradovite, (Na,[])2[(Ti4+,Fe3+)4{Si2O6}2{Si3AlO10}(OH)4].H2O, a new mineral species from the Khibina alkaline massif, Kola peninsula, Russia: description and crystal structure. The Canadian Mineralogist, 41(5), 989-1002.
Synonyms of Paravinogradovite
Other Language Names for Paravinogradovite
Common Associates
Associated Minerals Based on Photo Data:
1 photo of Paravinogradovite associated with Microcline | K(AlSi3O8) |
Related Minerals - Strunz-mindat Grouping
9.DB.05 | Balipholite | BaLiMg2Al3(Si2O6)2(OH)4 |
9.DB.05 | Carpholite | Mn2+Al2(Si2O6)(OH)4 |
9.DB.05 | Ferrocarpholite | Fe2+Al2Si2O6(OH)4 |
9.DB.05 | Magnesiocarpholite | MgAl2Si2O6(OH)4 |
9.DB.05 | Potassiccarpholite | K(Mn2+,Li)2Al4Si4O12(OH,F)8 |
9.DB.05 | Vanadiocarpholite | Mn2+V3+Al(Si2O6)(OH)4 |
9.DB.10 | Lorenzenite | Na2Ti2(Si2O6)O3 |
9.DB.15 | Lintisite | LiNa3Ti2(Si2O6)2O2 · 2H2O |
9.DB.15 | Punkaruaivite | LiTi2(HSi4O12)(OH)2 · H2O |
9.DB.17 | Eliseevite | LiNa1.5Ti2(H1.5Si4O12)O2 · 2H2O |
9.DB.20 | Kukisvumite | Na6ZnTi4(Si8O24)O4 · 4H2O |
9.DB.20 | Manganokukisvumite | Na6MnTi4(Si8O24)O4 · 4H2O |
9.DB.25 | Vinogradovite | Na4Ti4(Si2O6)2[(Si,Al)4O10]O4 · (H2O,Na,K)3 |
9.DB.30 | Nchwaningite | Mn2+2(SiO3)(OH)2 · H2O |
9.DB.35 | Plancheite | Cu8(Si8O22)(OH)4 · H2O |
9.DB.40 | Shattuckite | Cu5(Si2O6)2(OH)2 |
9.DB.40 | UM2005-31-SiO:CuH | Cu11(SiO4)(OH)18 · 9H2O (?) |
9.DB.45 | Aerinite | (Ca5.1Na0.5)(Fe3+,Al,Fe2+,Mg)4(Al,Mg)6[HSi12O36(OH)12][(CO3)1.2(H2O)12] |
9.DB.50 | Capranicaite | KCaNaAl4B4Si2O18 |
Fluorescence of Paravinogradovite
Weak yellow-green fluorescence in short-wave UV light.
Other Information
Notes:
Not reactive in 1:1 HCl and HNO3 at room or higher temperature.
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 Paravinogradovite
mindat.org URL:
https://www.mindat.org/min-25599.html
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References for Paravinogradovite
Reference List:
Khomyakov, A. P., Kulikova, I. E., Sokolova, E., Hawthorne, F. C., Kartashov, P. M. (2003) Paravinogradovite, (Na,◻)2[(Ti4+,Fe3+)4{Si2O6}2{Si3AlO10}(OH)4]H2O, a new mineral species from the Khibina Alkaline Massif, Kola Peninsula, Russia: description and crystal structure. The Canadian Mineralogist, 41 (4) 989-1002 doi:10.2113/gscanmin.41.4.989
Khomyakov, A. P., Kulikova, I. E., Sokolova, E., Hawthorne, F. C., Kartashov, P. M. (2003) Paravinogradovite, (Na,◻)2[(Ti4+,Fe3+)4{Si2O6}2{Si3AlO10}(OH)4]H2O, a new mineral species from the Khibina Alkaline Massif, Kola Peninsula, Russia: description and crystal structure. The Canadian Mineralogist, 41 (4) 989-1002 doi:10.2113/gscanmin.41.4.989
Localities for Paravinogradovite
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.
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Northeast slope, Kukisvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia