Britvinite
A valid IMA mineral species
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About Britvinite
Sergei N. Britvin
Formula:
[Pb7(OH)3F(BO3)2(CO3)][Mg4.5(OH)3(Si5O14)]
Colour:
pale yellow to colorless
Lustre:
Adamantine
Hardness:
3
Specific Gravity:
5.51 (Calculated)
Crystal System:
Triclinic
Name:
Named in honor of Sergei Nikolaevich Britvin (Сергей Николаевич Бритвин) (b. 1965), a Russian mineralogist at St. Petersburg State University with a wide range of scientific interests, including the mineralogy of skarn deposits.
Closely related to molybdophyllite.
Originally named "Molybdophyllite-18 Å" by Charalampides (1994).
Originally named "Molybdophyllite-18 Å" by Charalampides (1994).
Unique Identifiers
Mindat ID:
30905
Long-form identifier:
mindat:1:1:30905:9
IMA Classification of Britvinite
Approved
IMA Formula:
Pb14Mg9(Si10O28)(BO3)4(CO3)2(OH)12F2
Approval year:
2006
First published:
2007
Classification of Britvinite
9.EG.70
9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
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 |
|---|---|---|
| Bv | 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 Britvinite
Adamantine
Transparency:
Transparent
Colour:
Pale yellow to colorless
Streak:
White
Hardness:
3 on Mohs scale
Tenacity:
Flexible
Cleavage:
Distinct/Good
parallel to {001}.
parallel to {001}.
Comment:
Flexible in thin lamella, thick one is brittle
Density:
5.51 g/cm3 (Calculated)
Optical Data of Britvinite
Type:
Biaxial (-)
RI values:
nα = 1.896(2) nβ = 1.903(2) nγ = 1.903(2)
2V:
Measured: 20° (10)
Max. Birefringence:
δ = 0.007
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.
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.
Surface Relief:
Moderate
Chemistry of Britvinite
Mindat Formula:
[Pb7(OH)3F(BO3)2(CO3)][Mg4.5(OH)3(Si5O14)]
Element Weights:
Crystallography of Britvinite
Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Cell Parameters:
a = 9.3409(8) Å, b = 9.3579(7) Å, c = 18.8333(14) Å
α = 80.365(6)°, β = 75.816(6)°, γ = 59.870(5)°
α = 80.365(6)°, β = 75.816(6)°, γ = 59.870(5)°
Ratio:
a:b:c = 0.998 : 1 : 2.013
Unit Cell V:
1378.7 ų
Z:
2
Crystal Structure
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Unit Cell | Unit Cell Packed
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) |
|---|---|---|---|---|---|---|---|
| 0012396 | Britvinite | Yakubovich O V, Massa W, Chukanov N V (2008) Crystal structure of britvinite [Pb7(OH)3F(BO3)2(CO3)][Mg4.5(OH)3(Si5O14)]: A new layered silicate with an original type of silicon-oxygen networks Crystallography Reports 53 206-215 | 2008 | Varmland, Sweden | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 18.1 Å | (100) |
| 3.39 Å | (30) |
| 3.02 Å | (90) |
| 2.698 Å | (70) |
| 2.275 Å | (30) |
| 1.867 Å | (30) |
| 1.766 Å | (40) |
| 1.519 Å | (40) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-𝑇 alteration and/or metamorphism | |
| 31 : Thermally altered carbonate, phosphate, and iron formations | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Britvinite
General Appearance of Type Material:
plates
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow. The registration number is 3458/1.
Associated Minerals at Type Locality:
Synonyms of Britvinite
Other Language Names for Britvinite
Dutch:Britviniet
German:Britvinit
Common Associates
Associated Minerals Based on Photo Data:
| 11 photos of Britvinite associated with Hausmannite | Mn2+Mn3+2O4 |
| 11 photos of Britvinite associated with Calcite | CaCO3 |
| 9 photos of Britvinite associated with Barytocalcite | BaCa(CO3)2 |
Related Minerals - Strunz-mindat Grouping
| 9.EG.05 | Cymrite | BaAl2Si2(O,OH)8 · H2O |
| 9.EG.10 | Naujakasite | (Na,K)6(Fe2+,Mn2+,Ca)(Al,Fe)4Si8O26 |
| 9.EG.10 | Manganonaujakasite | Na6(Mn2+,Fe2+)Al4Si8O26 |
| 9.EG.15 | Dmisteinbergite | Ca(Al2Si2O8) |
| 9.EG.20 | Kampfite | Ba12(Si11Al5)O31(CO3)8Cl5 |
| 9.EG.25 | Vertumnite | Ca4Al4Si4O6(OH)24 · 3H2O |
| 9.EG.25 | Strätlingite | Ca2Al2SiO7 · 8H2O |
| 9.EG.30 | Eggletonite | (Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7 · 11H2O |
| 9.EG.30 | Ganophyllite | (K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2O |
| 9.EG.30 | Tamaite | (Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2O |
| 9.EG.35 | Zussmanite | K(Fe,Mg,Mn)13(Si,Al)18O42(OH)14 |
| 9.EG.35 | Coombsite | KMn2+13(Si,Al)18O42(OH)14 |
| 9.EG.40 | Chalcodite | K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27 |
| 9.EG.40 | Parsettensite | (K,Na,Ca)7.5(Mn,Mg)49Si72O168(OH)50 · nH2O |
| 9.EG.40 | Franklinphilite | (K,Na)4(Mn2+,Mg,Zn)48(Si,Al)72(O,OH)216 · 6H2O |
| 9.EG.40 | Lennilenapeite | K6-7(Mg,Mn,Fe,Zn)48(Si,Al)72(O,OH)216 · 16H2O |
| 9.EG.40 | Stilpnomelane | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
| 9.EG.45 | Latiumite | (Ca,K)4(Si,Al)5O11(SO4,CO3) |
| 9.EG.45 | Levantite | KCa3Al2(SiO4)(Si2O7)(PO4) |
| 9.EG.45 | Tuscanite | KCa6(Si,Al)10O22(SO4,CO3)2(OH) · H2O |
| 9.EG.50 | Jagoite | Pb18Fe3+4[Si4(Si,Fe3+)6][Pb4Si16(Si,Fe)4]O82Cl6 |
| 9.EG.50 | Friisite | Pb8Al3Si8O27Cl3 |
| 9.EG.55 | Wickenburgite | CaPb3Al2Si10O24(OH)6 |
| 9.EG.60 | Hyttsjöite | Pb18Ba2Ca5Mn2+2Fe3+2Si30O90Cl · 6H2O |
| 9.EG.65 | Armbrusterite | K5Na7Mn15[(Si9O22)4](OH)10 · 4H2O |
| 9.EG.70 | Roymillerite | Pb24Mg9(Si10O28)(CO3)10(BO3)(SiO4)(OH)13O5 |
| 9.EG.75 | Kayupovaite | Na2Mn10[(Si14Al2)O38(OH)8] · 7H2O |
| 9.EG.75 | UM1989-30-SiO:AlBaCaFeHKMgMn | (Ba,Ca)(Mn,Fe,Mg)22(Si,Al)32O76(OH)16 · 12H2O |
| 9.EG.75 | Bannisterite | (Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O |
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 Britvinite
mindat.org URL:
https://www.mindat.org/min-30905.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Britvinite
Reference List:
Charalampides, G. (1994): Mineralogical and crystal-chemical data of the lead silicate species ganomalite, margarosanite, and molybdophyllite from Långban, south-central Sweden and their synthetic equivalents. Oryktos Ploutos, 91, 33-46.(as "Molybdophyllite-18 Å")
Chukanov, N. V., Yakubovich, O. V., Pekov, I. V., Belakovsky, D. I., Massa, W. (2008) Britvinite, Pb15Mg9(Si10O28)(BO3)4(CO3)2(OH)12O2, a new mineral species from Långban, Sweden. Geology of Ore Deposits, 50 (8) 713-719 doi:10.1134/s1075701508080072
Localities for Britvinite
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.
Namibia | |
| Raman confirmed at University of ... |
Sweden (TL) | |
| Chukanov N. V.; Yakubovich et al. (2007) +1 other reference |
Quick NavTopAbout BritviniteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden