Mineralogy Database

Bornemanite Mineral Data

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General Bornemanite Information

Help on Chemical  Formula: Chemical Formula: BaNa3{(Na,Ti)4[(Ti,Nb)2O2Si4O14](F,OH)2}•PO4
Help on Composition: Composition: Molecular Weight = 908.83 gm
   Potassium    0.43 %  K     0.52 % K2O
   Barium      10.58 %  Ba   11.81 % BaO
   Sodium      13.66 %  Na   18.41 % Na2O
   Titanium    12.12 %  Ti   20.22 % TiO2
   Manganese    1.81 %  Mn    2.34 % MnO
   Niobium      7.16 %  Nb   10.24 % Nb2O5
   Silicon     12.36 %  Si   26.44 % SiO2
   Phosphorus   3.41 %  P     7.81 % P2O5
   Hydrogen     0.08 %  H     0.69 % H2O
   Oxygen      37.15 %  O
   Fluorine     1.25 %  F     1.25 % F
                 -   %   F    -0.53 % -O=F2    
              ______        ______ 
              100.00 %       99.21 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2.8Ba0.7K0.1Na2.6TiMn2+0.3Ti1.3Nb0.7O2Si4O14.4(OH)0.7F0.6(PO4)
Help on Environment: Environment: Late hydrothermal mineral.
Help on IMA Status: IMA Status: Approved IMA 1975
Help on Locality: Locality: Yubileinaya (Jubilee) alkalic pegmatite, Mt. Karnarsut, Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named or Irina Dimitrievna Borneman-Starynkevich (1890-), Russian mineralogist, Institute of Ore Deposits, Moscow. She was a student of the mineralogy of the Khibiny and Lovozero ma ssifs.
Help on Name Pronunciation: Name Pronunciation: Bornemanite + Pronunciation Say BORNEMANITE

Bornemanite Image

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  Bornemanite   Lomonosovite

Comments: Yellow crystalline bornemanite in dark brown lomonosovite.
Location: Yubileinaya Pegmatite, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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Comments: Pale yellow or peach colored, massive bornemanite.
Location: Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Bornemanite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7721:1:6.7345
Help on Cell Dimensions: Cell Dimensions: a = 5.498, b = 7.12, c = 47.95, Z = 4; beta = 88.4° V = 1,876.31 Den(Calc)= 3.22
Help on Crystal System: Crystal System: Monoclinic - Domatic H-M Symbol (m) Space Group: I11b
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.44(1), 8.04(1), 24.1(1),

Physical Properties of Bornemanite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Light yellow.
Help on Density: Density: 3.47 - 3.5, Average = 3.48
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Pearly
Help on Streak: Streak: white

Optical Properties of Bornemanite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.148 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.078 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2166,KPDmeas= 0.2001,KC= 0.2349
Ncalc = 1.76 - 1.82
Help on Optical Data: Optical Data: Biaxial (+), a=1.682-1.683, b=1.687-1.695, g=1.718-1.72, bire=0.0360-0.0370, 2V(Calc)=46-72, 2V(Meas)=66.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): pale yellowish brown.

Calculated Properties of Bornemanite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.07 gm/cc
note: Specific Gravity of Bornemanite =3.22 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEBornemanite = 58.51 barns/electron
U=PEBornemanite x relectron= 179.62 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 5.90 (Gamma Ray American Petroleum Institute Units)
Concentration of Bornemanite per GRapi unit = 16.94 (%)

Estimated Radioactivity from Bornemanite - barely detectable


Bornemanite Classification

Help on  Dana Class: Dana Class: (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O
  (56.04)with [Si2O7] with phosphate, water
  (56.04.02)Bornemanite Group Bornemanite BaNa3{(Na,Ti)4[(Ti,Nb)2O2Si4O14](F,OH)2}•PO4 I11b m Bykovaite! BaNa{(Na,Ti)4[(Ti,Nb)2(OH,O)3Si4O14](OH,F)2}•3H2O I11b 2
Help on  Strunz Class: Strunz Class: 09.BE.50 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BE -Si2O7 groups with additional anions;
09.BE.50 Bornemanite BaNa3{(Na,Ti)4[(Ti,Nb)2O2Si4O14](F,OH)2}•PO4 I11b m
09.BE.50 Shkatulkalite! {(Na,Mn,Ca,[])4[Nb2(O,H2O)4Si4O14](OH,F)2}•2(H2O,[]) P 2,Pm,P 2/m Mono
09.BE.50 Bykovaite! BaNa{(Na,Ti)4[(Ti,Nb)2(OH,O)3Si4O14](OH,F)2}•3H2O I11b 2

Other Bornemanite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(AmMin, Vol 97, p 1512) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Bornemanite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 09.BE.50





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