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Barytolamprophyllite Mineral Data

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General Barytolamprophyllite Information

Help on Chemical  Formula: Chemical Formula: Ba2Na3(Fe+++,Ti)3(Si2O7)2(O,OH,F)4
Help on Composition: Composition: Molecular Weight = 807.31 gm
   Potassium   2.95 %  K     3.56 % K2O
   Barium     14.97 %  Ba   16.71 % BaO
   Sodium      5.95 %  Na    8.02 % Na2O
   Strontium   3.58 %  Sr    4.24 % SrO
   Calcium     0.65 %  Ca    0.90 % CaO
   Magnesium   0.15 %  Mg    0.25 % MgO
   Titanium   17.26 %  Ti   28.79 % TiO2
   Manganese   1.91 %  Mn    2.46 % MnO
   Niobium     0.12 %  Nb    0.16 % Nb2O5
   Aluminum    0.10 %  Al    0.19 % Al2O3
   Iron        2.42 %  Fe
   Silicon    13.92 %  Si   29.77 % SiO2
   Hydrogen    0.09 %  H     0.78 % H2O
   Oxygen     34.23 %  O
   Fluorine    1.72 %  F     1.72 % F
                -   %   F    -0.72 % -O=F2    
             ______        ______ 
             100.00 %       97.33 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba0.88K0.61Sr0.33Ca0.05Na2.09Fe0+0.3Mn2+0.28Ca0.08Mg0.05Ti2.91Fe3+0.05Al0.03Nb0.01 (Si2O7)2O2F0.73OH0.7O0.57
Help on Environment: Environment: Alkalic rocks.
Help on IMA Status: IMA Status: Approved IMA 1965
Help on Locality: Locality: Lovozero massif, Khibiny, Kola, Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition and similarity to lamprophyllite.
Help on Name Pronunciation: Name Pronunciation: Barytolamprophyllite + Pronunciation Say BARYTOLAMPROPHYLLITE
Help on Synonym: Synonym: ICSD 39868
  PDF 34-313
 

Barytolamprophyllite Image

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  Barytolamprophyllite   Lamprophyllite

Comments: Brownish-yellow barytolamprophyllite on dark green lamprophyllite.
Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Barytolamprophyllite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.7959:1:0.7603
Help on Cell Dimensions: Cell Dimensions: a = 19.8971, b = 7.1165, c = 5.4108, Z = 2; beta = 96.676° V = 760.96 Den(Calc)= 3.52
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.85(1), 1.51(0.9), 2.19(0.9),
 

Physical Properties of Barytolamprophyllite

Help on Cleavage: Cleavage: {100} Perfect, {011} Good, {010} Poor
Help on Color: Color: Golden brown, Dark brown.
Help on Density: Density: 3.62 - 3.66, Average = 3.64
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Flakes - Flat, thin crystals or aggregates.
Help on Habit: Habit: Stellate - Occurs as spherical, radial aggregates radiating from a "star" like point.
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light brown
 

Optical Properties of Barytolamprophyllite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.125 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.095 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2153,KPDmeas= 0.2082,KC= 0.2379
Ncalc = 1.84 - 1.87
Help on Optical Data: Optical Data: Biaxial (+), a=1.742-1.743, b=1.754, g=1.776-1.778, bire=0.0340-0.0350, 2V(Calc)=70-74, 2V(Meas)=29-30. Dispersion r > v.
Help on Pleochroism (x): Pleochroism (x): light yellow.
Help on Pleochroism (y): Pleochroism (y): brownish yellow.
Help on Pleochroism (z): Pleochroism (z): brown.
 

Calculated Properties of Barytolamprophyllite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.33 gm/cc
note: Specific Gravity of Barytolamprophyllite =3.52 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEBarytolamprophyllite = 72.79 barns/electron
U=PEBarytolamprophyllite x relectron= 242.44 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 40.33 (Gamma Ray American Petroleum Institute Units)
Concentration of Barytolamprophyllite per GRapi unit = 2.48 (%)

Estimated Radioactivity from Barytolamprophyllite - barely detectable

 

Barytolamprophyllite Classification

Help on  Dana Class: Dana Class: 56.02.06c.01 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O
  (56.02)with cations in [4] and/or >[4] coordination
  (56.02.06c)Seidozerite - Lamprophyllite group (Lamprophyllite subgroup)
 
56.02.06c.01 Barytolamprophyllite Ba2Na3(Fe,Ti)3(Si2O7)2(O,OH,F)4 C 2/m 2/m
 
56.02.06c.02 Delindeite Ba2(Na,K,[])3(Ti,Fe)[Ti2(O,OH)4Si4O14](H2O,OH)2 A2/m 2/m
 
56.02.06c.03 Ericssonite BaMn2FeO[Si2O7](OH) C 2/m 2/m
 
56.02.06c.04 Lamprophyllite Na2(Sr,Ba)2Ti3(SiO4)4(OH,F)2 C 2/m 2/m
 
56.02.06c.05 Orthoericssonite BaMn2(FeO)Si2O7(OH) Pmmn 2/m 2/m 2/m
 
56.02.06c.06 Andremeyerite BaFe(Fe,Mn,Mg)Si2O7 P 21/c 2/m
 
56.02.06c.07 Eveslogite! (Ca,K,Na,Sr,Ba)48[(Ti,Nb,Fe,Mn)12(OH)12Si48O144](F,OH,Cl)14 P 2/m 2/m
 
56.02.06c.08 Nabalamprophyllite! Ba(Na,Ba){Na3Ti[Ti2O2Si4O14](OH,F)2} P 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.BE.25 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BE -Si2O7 groups with additional anions;
 
09.BE.25 Barytolamprophyllite Ba2Na3(Fe,Ti)3(Si2O7)2(O,OH,F)4 C 2/m 2/m
 
09.BE.25 Ericssonite BaMn2FeO[Si2O7](OH) C 2/m 2/m
 
09.BE.25 Lamprophyllite Na2(Sr,Ba)2Ti3(SiO4)4(OH,F)2 C 2/m 2/m
 
09.BE.25 Orthoericssonite BaMn2(FeO)Si2O7(OH) Pmmn 2/m 2/m 2/m
 
09.BE.25 Seidozerite (Na,Ca)2(Zr,Ti,Mn)2Si2O7(O,F)2 P 2/c 2/m
 
09.BE.25 Nabalamprophyllite! Ba(Na,Ba){Na3Ti[Ti2O2Si4O14](OH,F)2} P 2/m 2/m
 
09.BE.25 Grenmarite! (Zr,Mn)2(Zr,Ti)(Mn,Na)(Na,Ca)4(Si2O7)2(O,F)4 P 2/c 2/m
 

Other Barytolamprophyllite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8, AmMin, v94:405) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Barytolamprophyllite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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Print or Cut-and-Paste your Barytolamprophyllite Specimen Label here :

Barytolamprophyllite

Ba2Na3(Fe+++,Ti)3(Si2O7)2(O,OH,F)4
Dana No: 56.02.06c.01 Strunz No: 09.BE.25
Locality:

 

Notes:

 

 
   
 


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