General Bykovaite Information![]() BaNa{(Na,Ti)4[(Ti,Nb)2(OH,O)3Si4O14](OH,F)2}•3H2O |
![]() Molecular Weight = 824.26 gm |
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Potassium 0.57 % K 0.69 % K2O |
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Barium 11.83 % Ba 13.21 % BaO |
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Sodium 9.87 % Na 13.31 % Na2O |
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Strontium 0.53 % Sr 0.63 % SrO |
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Calcium 0.15 % Ca 0.20 % CaO |
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Titanium 11.33 % Ti 18.90 % TiO2 |
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Manganese 1.73 % Mn 2.24 % MnO |
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Niobium 7.44 % Nb 10.64 % Nb2O5 |
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Aluminum 0.07 % Al 0.12 % Al2O3 |
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Iron 0.20 % Fe 0.26 % FeO |
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Silicon 13.56 % Si 29.01 % SiO2 |
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Hydrogen 1.12 % H 9.98 % H2O |
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Oxygen 40.20 % O |
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Fluorine 1.41 % F 1.41 % F |
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- %
F -0.59 % -O=F2 |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
![]() Na0.47K0.12Sr0.05Na3.07Ti0.61Mn2+0.26Ca0.03Fe2+0.03Ti1.34Nb0.66Si3.98Al0.02O14(OH)3.13
F0.61O0.58·3(H2O) |
![]() Pegmatite vein consisting of a central ussingitic core surrounded by a zone of mostly microcline and aegirine at the margins, and lies in poikilitic nepheline-sodalite syenite. Hete rophyllosilicate pseudomorphous after |
![]() Approved IMA 2003 (Dana # Added) |
![]() Alluaiv, Lovozero Massif, Kola, Russia Link to MinDat.org Location Data. |
![]() Named to honor analytical chemist Alexandra Vasilyevna Bykova (1917-2001), who first discovered that bornemanite could be transformed to a synthetic form of bykovaite upon treatment with water. |
![]() IMA2003-044 |
| | Bykovaite Image
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Bykovaite Crystallography![]() a:b:c =0.7733:1:7.0956 |
![]() a = 5.552, b = 7.179, c = 50.94, Z = 4; beta = 91.1° V = 2,029.98 Den(Calc)= 2.70 |
![]() Monoclinic - SphenoidalH-M Symbol (2) Space Group: I11b |
![]() By Intensity(I/Io): 25.5(1), 3.17(0.74), 8.48(0.72),2.763(0.2), 2.11(0.14), 3.44(0.14), 12.68(0.14), 5.11(0.11), |
| Physical Properties of Bykovaite![]() {001} Perfect, {100} Imperfect |
![]() Creamy yellow, Pale yellow. |
![]() 2.98 |
![]() Semitransparent |
![]() Brittle - Splintery - Brittle fracture leaving splintery fragments. |
![]() Spherical - Spherical, rounded aggregates. |
![]() 3 - Calcite |
![]() Silky |
![]() white |
| Optical Properties of Bykovaite![]() CI meas= 0.071 (Fair) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.025 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.254,KPDmeas= 0.2301,KC= 0.2477 Ncalc = 1.67 - 1.74 ![]() Biaxial (+), a=1.668, b=1.679, g=1.71, bire=0.0420 |
| Calculated Properties of Bykovaite![]() Bulk Density (Electron Density)=2.60 gm/cc |
note: Specific Gravity of Bykovaite =2.70 gm/cc. ![]() Fermion Index = 0.04 |
Boson Index = 0.96 ![]() PEBykovaite = 63.92 barns/electron |
U=PEBykovaite x relectron= 166.24 barns/cc. ![]() |
GRapi = 7.89 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Bykovaite | Bykovaite Classification![]() 56.04.02.02 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O |
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(56.04)with [Si2O7] with phosphate, water |
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(56.04.02)Bornemanite Group |
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![]() 09.BE.50 09 - SILICATES (Germanates) |
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09.B - Sorosilicates |
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09.BE -Si2O7 groups with additional anions; |
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| Other Bykovaite Information![]() NAME( AmMin, v91, p1452) PHYS. PROP.(AmMin, v91, p1452) OPTIC PROP.(AmMin, v91, p1452) |
![]() Links to other databases for Bykovaite : |
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 Bykovaite using: Visit our Advertisers for Bykovaite : A Bijoux Google Search for BykovaiteAdam's Minerals Google Search for Bykovaite Cape Minerals Google Search for Bykovaite Dakota Matrix Minerals Google Search for Bykovaite Excalibur Mineral Corp. Google Search for Bykovaite Exceptional Minerals Google Search for Bykovaite John Betts Fine Minerals Search for Bykovaite McDougall Minerals Google Search for Bykovaite Mineral News Website Link Rock and Mineral Shows Google Search for Bykovaite Weinrich Minerals, Inc. Google Search for Bykovaite Ask about Bykovaite here : Print or Cut-and-Paste your Bykovaite Specimen Label here :
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