General Britvinite Information![]() Pb7+xMg4.5[(Si,Al)5O14](BO3)(BO3,AsO4)(CO3)(OH,O)7 ( x < 0.5) |
![]() Molecular Weight = 4,587.29 gm |
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Magnesium 4.78 % Mg 7.93 % MgO |
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Aluminum 0.22 % Al 0.41 % Al2O3 |
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Silicon 5.96 % Si 12.74 % SiO2 |
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Boron 0.83 % B 2.66 % B2O3 |
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Hydrogen 0.26 % H 2.30 % H2O |
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Lead 66.62 % Pb 71.77 % PbO |
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Carbon 0.57 % C 2.09 % CO2 |
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Oxygen 20.76 % O |
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100.00 % 99.91 % = TOTAL OXIDE |
![]() Pb14.75Mg9.03Si9.73Al0.37O30.76(BO3)3.51(CO3)2.18(OH)11.7 |
![]() Layer silicate |
![]() Approved IMA 2006 (Dana # Added) |
![]() Långban deposit, Bergslagen ore region, Filipstad district, Värmland, Sweden Link to MinDat.org Location Data. |
![]() Named for Sergei Nikolaevich Britvin (b. 1965), a Russian mineralogist. |
![]() IMA2006-031 |
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| | Britvinite Crystallography![]() a:b:c =0.9979:1:2.0121 |
![]() a = 9.3409, b = 9.3597, c = 18.8333, Z = 1; alpha = 80.365°, beta = 75.816°, gamma = 59.87° V = 1,361.20 Den(Calc)= 5.60 |
![]() Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1 |
![]() By Intensity(I/Io): 18.1(1), 3.02(0.9), 2.698(0.7),1.519(0.4), 1.766(0.4), 1.867(0.3), 2.275(0.3), 3.39(0.3), |
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| Physical Properties of Britvinite![]() {001} Perfect |
![]() Pale yellow, Colorless. |
![]() Transparent |
![]() Brittle - Sectile - Brittle fracture with slightly sectile shavings possible. |
![]() Platy - Sheet forms (e.g. micas). |
![]() 3 - Calcite |
![]() Adamantine |
![]() white |
| Optical Properties of Britvinite![]() CI calc= -0.042 (Good) - where the CI = (1-KPDcalc/KC) |
KPDcalc= 0.1632,KC= 0.1566 Ncalc = 1.86 ![]() Biaxial (+/-), a=1.896, b=1.903, g=1.903, bire=0.0070, 2V(Calc)=0, 2V(Meas)=20. Dispersion strong, r < v. |
| Calculated Properties of Britvinite![]() Bulk Density (Electron Density)=4.76 gm/cc |
note: Specific Gravity of Britvinite =5.52 gm/cc. ![]() Fermion Index = 0.15 |
Boson Index = 0.85 ![]() PEBritvinite =1,186.68 barns/electron |
U=PEBritvinite x rElectron Density=5,647.46 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Britvinite is Not Radioactive | Britvinite Classification![]() 71.05.03.01 (71)Phyllosilicate Sheets of Six-Membered Rings |
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(71.05)with other anions |
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(71.05.03)Dana Group |
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![]() 09.EG.70 09 - SILICATES (Germanates) |
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09.E - Phyllosilicates |
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09.EG -Double nets with 6-membered and larger rings |
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| Other Britvinite Information![]() NAME( Geology of Ore Deposits, v50:713) PHYS. PROP.(Geology of Ore Deposits, v50:713) OPTIC PROP.(Geology of Ore Deposits, v50:713) |
![]() Links to other databases for Britvinite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Britvinite using: Visit our Advertisers for Britvinite : A Bijoux Google Search for BritviniteAdam's Minerals Google Search for Britvinite Cape Minerals Google Search for Britvinite Dakota Matrix Minerals Google Search for Britvinite Excalibur Mineral Corp. Google Search for Britvinite Exceptional Minerals Google Search for Britvinite John Betts Fine Minerals Search for Britvinite McDougall Minerals Google Search for Britvinite Mineral News Website Link Rock and Mineral Shows Google Search for Britvinite Weinrich Minerals, Inc. Google Search for Britvinite Ask about Britvinite here : Print or Cut-and-Paste your Britvinite Specimen Label here :
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