Mineralogy Database

Bazzite Mineral Data

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General Bazzite Information

Help on Chemical  Formula: Chemical Formula: Be3(Sc,Al)2Si6O18
Help on Composition: Composition: Molecular Weight = 564.46 gm
   Scandium   11.95 %  Sc   18.32 % Sc2O3
   Beryllium   4.79 %  Be   13.29 % BeO
   Aluminum    2.39 %  Al    4.52 % Al2O3
   Silicon    29.85 %  Si   63.87 % SiO2
   Oxygen     51.02 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Be3Sc1.5Al0.5Si6O18
Help on Environment: Environment: Pegmatites and alpine-vein rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1915
Help on Locality: Locality: Lake Maggiore, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the Italian engineer, A. E. Bazzi.
Help on Name Pronunciation: Name Pronunciation: Bazzite Say BAZZITE
Help on Synonym: Synonym: ICSD 90829
  PDF 20-165
 

Bazzite Image

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  Bazzite

Comments: Blue crystals of bazzite.
Location: Thiemendorf near Königshain, Lausitz, Sachsen, Germany. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Bazzite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.9626
Help on Cell Dimensions: Cell Dimensions: a = 9.521, c = 9.165, Z = 2; V = 719.50 Den(Calc)= 2.61
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 6/mcc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.94(1), 3.29(1), 1.65(0.8),
 

Physical Properties of Bazzite

Help on Cleavage: Cleavage: {0001} Indistinct
Help on Color: Color: Azure blue, Dark blue.
Help on Density: Density: 2.8
Help on Diaphaneity: Diaphaneity: Translucent to subtranslucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 6.5 - Pyrite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: pale bluish white
 

Optical Properties of Bazzite

Help on Dichroism (e): Dichroism (e): pale greenish yellow.
Help on Dichroism (w): Dichroism (w): azure blue.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.066 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2358,KPDmeas= 0.2198,KC= 0.2212
Ncalc = 1.58 - 1.62
Help on Optical Data: Optical Data: Uniaxial (-), e=1.605, w=1.626, bire=0.0210.
 

Calculated Properties of Bazzite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.76 gm/cc
note: Specific Gravity of Bazzite =2.80 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEBazzite = 2.93 barns/electron
U=PEBazzite x rElectron Density= 8.09 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bazzite is Not Radioactive
 

Bazzite Classification

Help on  Dana Class: Dana Class: 61.01.01.02 (61)Cyclosilicate Six-Membered Rings
  (61.01)with [Si6O18] rings; possible (OH) and Al substitution
  (61.01.01)Beryl group
 
61.01.01.01 Beryl Be3Al2Si6O18 P 6/mmc 6/m 2/m 2/m
 
61.01.01.02 Bazzite Be3(Sc,Al)2Si6O18 P 6/mcc 6/m 2/m 2/m
 
61.01.01.03 Indialite Mg2Al4Si5O18 P 6/mcc 6/m 2/m 2/m
 
61.01.01.04 Stoppaniite! (Fe,Al,Mg)4(Na,[])2[Be6Si12O36]•2(H2O) P 6/mmc 6/m 2/m 2/m
 
61.01.01.05 Pezzottaite! Cs(Be2Li)Al2Si6O18 R 3c 3m
Help on  Strunz Class: Strunz Class: 09.CJ.05 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CJ -[Si6O18]12- 6-membered single rings (sechser-Einfachringe),
 
09.CJ.05 Beryl Be3Al2Si6O18 P 6/mmc 6/m 2/m 2/m
 
09.CJ.05 Bazzite Be3(Sc,Al)2Si6O18 P 6/mcc 6/m 2/m 2/m
 
09.CJ.05 Indialite Mg2Al4Si5O18 P 6/mcc 6/m 2/m 2/m
 
09.CJ.05 Stoppaniite! (Fe,Al,Mg)4(Na,[])2[Be6Si12O36]•2(H2O) P 6/mmc 6/m 2/m 2/m
 
09.CJ.05 Pezzottaite! Cs(Be2Li)Al2Si6O18 R 3c 3m
 

Other Bazzite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Bazzite :
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
15 - WWW-MINCRYST

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Bazzite

Be3(Sc,Al)2Si6O18
Dana No: 61.01.01.02 Strunz No: 09.CJ.05
Locality:

 

Notes:

 

 
   
 


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