Bazzite Mineral Data

General Bazzite Information

Chemical Formula:

Be3(Sc,Al)2Si6O18

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

Empirical Formula:

Be₃Sc_1.5Al_0.5Si₆O₁₈

Environment:

Pegmatites and alpine-vein rocks.

IMA Status:

Valid Species (Pre-IMA) 1915

Locality:

Lake Maggiore, Italy. Link to MinDat.org Location Data.

Name Origin:

Named after the Italian engineer, A. E. Bazzi.

Name Pronunciation:

Bazzite

Synonym:

ICSD 90829

PDF 20-165

Bazzite Image

Images:

Bazzite

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

Bazzite Crystallography

Axial Ratios:

a:c = 1:0.9626

Cell Dimensions:

a = 9.521, c = 9.165, Z = 2; V = 719.50 Den(Calc)= 2.61

Crystal System:

Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6/mcc

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.94(1), 3.29(1), 1.65(0.8),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Demartin F , Gramaccioli C M , Pilati T , The Canadian Mineralogist , 38 (2000) p.1419-1424, Structure refinement of bazzite from pegmatitic and miarolitic occurrences, Locality: Baveno granite, Piemonte, Italy

View Additional jPOWD Structure files for Bazzite
[1]

Physical Properties of Bazzite

Cleavage:

{0001} Indistinct

Color:

Azure blue, Dark blue.

Density:

2.8

Diaphaneity:

Translucent to subtranslucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Crystalline - Fine - Occurs as well-formed fine sized crystals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

6.5 - Pyrite

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Streak:

pale bluish white

Optical Properties of Bazzite

Dichroism (e):

pale greenish yellow.

Dichroism (w):

azure blue.

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

Optical Data:

Uniaxial (-), e=1.605, w=1.626, bire=0.0210.

Calculated Properties of Bazzite

Electron Density:

Bulk Density (Electron Density)=2.76 gm/cc
note: Specific Gravity of Bazzite =2.80 gm/cc.

Fermion Index:

Fermion Index = 0.06
Boson Index = 0.94

Photoelectric:

PE_Bazzite= 2.93 barns/electron
U=PE_Bazzite x rElectron Density= 8.09 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bazzite is Not Radioactive

Bazzite Classification

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

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

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

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

Search for Bazzite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Bazzite :

A Bijoux Google Search for Bazzite
Adam's Minerals Google Search for Bazzite
Cape Minerals Google Search for Bazzite
Dakota Matrix Minerals Google Search for Bazzite
Excalibur Mineral Corp. Google Search for Bazzite
Exceptional Minerals Google Search for Bazzite
John Betts Fine Minerals Search for Bazzite
McDougall Minerals Google Search for Bazzite
Mineral News Website Link
Rock and Mineral Shows Google Search for Bazzite
Weinrich Minerals, Inc. Google Search for Bazzite

Ask about Bazzite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Bazzite

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

Notes: