Buergerite Mineral Data

Buergerite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About

Advertisment
Exceptional Minerals features excellent, high quality mineral specimens for sale. We also have a weekly Best Offer Mineral Auction.
 Our Mission is Simple: RMS will be the go-to portal for all mineral, gem and rock shows in the USA
 Your premier supplier of quality mineral specimens from Southern Africa and the world at large
 McDougall Minerals sells high-quality mineral specimens from all over the world to collectors of all levels, from beginners to connoisseurs

General Buergerite Information

Help on Chemical Formula: Chemical Formula: NaFe+++3Al6(BO3)3Si6O21F
Help on Composition: Composition: Molecular Weight = 1,052.34 gm
   Sodium     2.18 %  Na    2.94 % Na2O
   Aluminum  15.38 %  Al   29.07 % Al2O3
   Iron      15.92 %  Fe   22.76 % Fe2O3
   Silicon   16.01 %  Si   34.26 % SiO2
   Boron      3.08 %  B     9.92 % B2O3
   Oxygen    45.61 %  O
   Fluorine   1.81 %  F     1.81 % F
               -   %   F    -0.76 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaFe3+3Al6(BO3)3Si6O21F
Help on Environment: Environment: Of probable pneumatolytic origin, in cavities in a rhyolite.
Help on IMA Status: IMA Status: Approved IMA 1966 (Dana # Changed)
Help on Locality: Locality: From near Mexquitic, San Luis Potosi, Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: To honor Professor Martin Buerger (1903-1986), eminent crystallographer, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
Help on Name Pronunciation: Name Pronunciation: Buergerite + Pronunciation Say BUERGERITE
Help on Synonym: Synonym: Buergerite - (61.3.1.5)
  ICSD 74183
  PDF 17-517
  Tourmaline
 

Buergerite Image

Click Here for Larger Buergerite Image in a New Browser Window Images:
Click Here for Larger Buergerite Image

Buergerite

Comments: Doubly-terminated brownish buergerite tourmaline crystals on matrix.
Location: Mexquitic, San Luis Potosí, Mexico. Scale: 26x15x13 mm.
© John Betts - Fine Minerals

Buergerite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.45331
Help on Cell Dimensions: Cell Dimensions: a = 15.874, c = 7.196, Z = 3; V = 1,570.34 Den(Calc)= 3.34
Help on Crystal System: Crystal System: Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.58(1), 2.96(0.85), 3.99(0.85),
Click Here for Large Buergerite Structure Window 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


Tippe A , Hamilton W C , American Mineralogist , 56 (1971) p.101-113, A neutron-diffraction study of the ferric tourmaline, buergerite

 

Physical Properties of Buergerite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Bronze, Dark brown, Black.
Help on Density: Density: 3.31
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Hardness: Hardness: 7 - Quartz
Help on Streak: Streak: yellowish brown
 

Optical Properties of Buergerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.091 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.099 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2081,KPDmeas= 0.21,KC= 0.2309
Ncalc = 1.76 - 1.77
Help on Optical Data: Optical Data: Uniaxial (-), e=1.655, w=1.735, bire=0.0800.
 

Calculated Properties of Buergerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.24 gm/cc
note: Specific Gravity of Buergerite =3.31 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEBuergerite = 5.89 barns/electron
U=PEBuergerite x rElectron Density= 19.07 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Buergerite is Not Radioactive
 

Buergerite Classification
Help on Dana Class: Dana Class: 61.03c.01.05 (61)Cyclosilicate Six-Membered Rings
  (61.03c)with borate groups (Ferric Tourmaline Subgroup)
  (61.03c.01)Buergerite Subgroup
 
61.03c.01.05 Buergerite! NaFe3Al6(BO3)3Si6O21F R 3m 3m
 
61.03c.01.06 Povondraite! (Na,K)(Fe,Fe)3(Fe,Mg,Al)6(BO3)3Si6O18(OH)4 R 3m 3m
Help on Strunz Class: Strunz Class: 09.CK.05 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CK -[Si6O18]12- 6-membered single rings, with insular complex anions
 
09.CK.05 Chromdravite! NaMg3(Cr,Fe)6(BO3)3Si6O18(OH)4 R 3m 3m
 
09.CK.05 Feruvite! (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4 R 3m 3m
 
09.CK.05 Dravite NaMg3Al6(BO3)3Si6O18(OH)4 R 3m 3m
 
09.CK.05 Buergerite! NaFe3Al6(BO3)3Si6O21F R 3m 3m
 
09.CK.05 Foitite! []Na<0.5(Fe,Al)3Al6Si6O18(BO3)3(OH)4 R 3m 3m
 
09.CK.05 Liddicoatite! Ca(Li,Al)3Al6(BO3)3Si6O18(O,OH,F)4 R 3m 3m
 
09.CK.05 Elbaite Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 R 3m 3m
 
09.CK.05 Rossmanite! []LiAl2Al6(Si6O18)(BO3)3(OH)4 R 3m 3m
 
09.CK.05 Olenite! NaAl3Al6(BO3)3(Si6O18)(O,OH)4 R 3m 3m
 
09.CK.05 Povondraite! (Na,K)(Fe,Fe)3(Fe,Mg,Al)6(BO3)3Si6O18(OH)4 R 3m 3m
 
09.CK.05 Schorl NaFe3Al6(BO3)3Si6O18(OH)4 R 3m 3m
 
09.CK.05 Uvite (Ca,Na)(Mg,Fe)3Al5Mg(BO3)3Si6O18(OH,F)4 R 3m 3m
 
09.CK.05 Vanadiumdravite! NaMg3V6(Si6O18)(BO3)3(OH)4 R 3m 3m
 
09.CK.05 Magnesiofoitite! [](Mg2Al)Al6(Si6O18)(BO3)3(OH)4 R 3m 3m
 
09.CK.05 Hydroxyuvite! CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH) R 3m 3m
 
09.CK.05 Schorl-(F)! NaFe3Al6Si6O18)(BO3)3(OH)3(F,OH) R 3m 3m
 

Other Buergerite Information
Help on References: References: NAME( AntBidBlaNic2) 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 Buergerite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
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 - HyperPhysics
12 - MinDAT
13 - Mineral and Gemstone Kingdom
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - WWW-MINCRYST

Search for Buergerite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Buergerite :

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

Ask about Buergerite 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 Buergerite Specimen Label here :

Buergerite

NaFe+++3Al6(BO3)3Si6O21F
Dana No: 61.03c.01.05 Strunz No: 09.CK.05
Locality:

 

Notes: