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Bityite Mineral Data

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General Bityite Information

Help on Chemical  Formula: Chemical Formula: CaLiAl2(AlBeSi2)O10(OH)2
Help on Composition: Composition: Molecular Weight = 387.16 gm
   Lithium     1.79 %  Li    3.86 % Li2O
   Calcium    10.35 %  Ca   14.48 % CaO
   Beryllium   2.33 %  Be    6.46 % BeO
   Aluminum   20.91 %  Al   39.50 % Al2O3
   Silicon    14.51 %  Si   31.04 % SiO2
   Hydrogen    0.52 %  H     4.65 % H2O
   Oxygen     49.59 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaLiAl3Be(Si2O10)(OH)2
Help on Environment: Environment: Crystal crusts in pegmatite veins.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1908
Help on Locality: Locality: Maharitra on Mt. Bity, Madagascar. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Bityite Say BITYITE
 

Bityite Image

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  Bityite

Comments: White crystalline bityite in silvery mica matrix.
Location: Harding Mine, Taos County, New Mexico, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Bityite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5691:1:2.1638
Help on Cell Dimensions: Cell Dimensions: a = 4.948, b = 8.693, c = 18.81, Z = 4; beta = 90.08° V = 809.07 Den(Calc)= 3.18
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.45(1), 2.48(1), 2.043(0.9),
 

Physical Properties of Bityite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Brown white, Colorless, Yellow, Pearl white.
Help on Density: Density: 3
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Bityite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.004 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.061 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2066,KPDmeas= 0.219,KC= 0.2199
Ncalc = 1.66 - 1.7
Help on Optical Data: Optical Data: Biaxial (-), a=1.651, b=1.659, g=1.661, bire=0.0100, 2V(Calc)=52, 2V(Meas)=35-52.
 

Calculated Properties of Bityite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.98 gm/cc
note: Specific Gravity of Bityite =3.00 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEBityite = 2.49 barns/electron
U=PEBityite x rElectron Density= 7.40 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bityite is Not Radioactive
 

Bityite Classification

Help on  Dana Class: Dana Class: 71.02.02c.03 (71)Phyllosilicate Sheets of Six-Membered Rings
  (71.02)with 2:1 Layers
  (71.02.02c)Mica Group (Margarite subgroup)
 
71.02.02c.01 Margarite CaAl2(Al2Si2)O10(OH)2 C 2/c 2/m
 
71.02.02c.02 Clintonite Ca(Mg,Al)3(Al3Si)O10(OH)2 C 2/m 2/m
 
71.02.02c.03 Bityite CaLiAl2(AlBeSi2)O10(OH)2 C 2/c 2/m
 
71.02.02c.04 Anandite (Ba,K)(Fe,Mg)3(Si,Al,Fe)4O10(S,OH)2 C 2/m 2/m
 
71.02.02c.05 Kinoshitalite (Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2 C 2/m 2/m
 
71.02.02c.06 Ferrokinoshitalite! (Ba,K)(Fe,Mg)3(Si2Al2)O10(OH,F)2 C 2/m 2/m
 
71.02.02c.07 Ganterite! [Ba0.5(Na,K)0.5]Al2(Si2.5Al1.5O10)(OH)2 C 2/c 2/m
 
71.02.02c.08 Oxykinoshitalite! (Ba,K)(Mg,Fe,Ti)3(Si,Al)4O10O2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.EC.35 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
 
09.EC.35 Clintonite Ca(Mg,Al)3(Al3Si)O10(OH)2 C 2/m 2/m
 
09.EC.35 Bityite CaLiAl2(AlBeSi2)O10(OH)2 C 2/c 2/m
 
09.EC.35 Anandite (Ba,K)(Fe,Mg)3(Si,Al,Fe)4O10(S,OH)2 C 2/m 2/m
 
09.EC.35 Kinoshitalite (Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2 C 2/m 2/m
 
09.EC.35 Ferrokinoshitalite! (Ba,K)(Fe,Mg)3(Si2Al2)O10(OH,F)2 C 2/m 2/m
 
09.EC.35 Oxykinoshitalite! (Ba,K)(Mg,Fe,Ti)3(Si,Al)4O10O2 C 2/m 2/m
 

Other Bityite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Bityite :
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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Bityite

CaLiAl2(AlBeSi2)O10(OH)2
Dana No: 71.02.02c.03 Strunz No: 09.EC.35
Locality:

 

Notes:

 

 
   
 


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