Bernardite Mineral Data

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


Desert Winds Gems and Minerals
[Mineral Galleries] [About Me] [e-Bay Items] [Latest News] [How to Order]
A Diverse Selection of Beautifully Unique Gem & Mineral Specimens
Desert Winds Gems & Minerals • For All Levels of Collectors Worldwide
Aesthetic & Rare Mineral Specimens • Regular Updates


General Bernardite Information

Help on Chemical Formula: Chemical Formula: Tl(As,Sb)5S8
Help on Composition: Composition: Molecular Weight = 952.59 gm
   Thallium  21.46 %  Tl
   Antimony  31.95 %  Sb
   Arsenic   19.66 %  As
   Sulfur    26.93 %  S
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: TlAs2.5Sb2.5S8
Help on IMA Status: IMA Status: Approved IMA 1989
Help on Locality: Locality: Lengenbach, Binn, Switzerland; Allchar, Macedonia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Names in 1989 for Jan Bernard (b.1928), Czech mineralogist.
Help on Name Pronunciation: Name Pronunciation: Bernardite + Pronunciation Say BERNARDITE
Help on Synonym: Synonym: ICSD 63481
  PDF 46-1339
 

Search for Bernardite Images

Click Here To Search Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.
  

Bernardite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.9466:1:1.3373
Help on Cell Dimensions: Cell Dimensions: a = 15.647, b = 8.038, c = 10.75, Z = 4; beta = 91.27° V = 1,351.70 Den(Calc)= 4.68
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.06(1), 4.28(0.74), 4.46(0.65),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: ( 0 1 2) ( 2 1 0) ( 2 0 1) ( 1 0 0)

Warning: this large pop-up is very compute intensive and may not work well with some computers.
Click Here for Large Bernardite 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


Pasava J , Pertlik F , Stumpfl E F , Zemann J , Mineralogical Magazine , 53 (1989) p.531-538, Bernardite, a new thallium arsenic sulphosalt from Allchar,, Macedonia, with a determination of the crystal structure, Locality: Allchar, Macedonia

 

Physical Properties of Bernardite

Help on Cleavage: Cleavage: None
Help on Color: Color: Black.
Help on Density: Density: 4.5
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: dark red
 

Calculated Properties of Bernardite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.12 gm/cc
note: Specific Gravity of Bernardite =4.68 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.002019714
Boson Index = 0.997980286
Help on Photoelectric: Photoelectric: PEBernardite = 481.57 barns/electron
U=PEBernardite x rElectron Density=1,982.63 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bernardite is Not Radioactive
 

Bernardite Classification
Help on Dana Class: Dana Class: 03.08.14.02 (03)Sulfides - Sulfosalts
  (03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.08.14)Dana Group
 
03.08.14.01 Parapierrotite Tl(Sb,As)5S8 P 21/n 2/m
 
03.08.14.02 Bernardite Tl(As,Sb)5S8 P 21/c 2/m
Help on Strunz Class: Strunz Class: 02.HD.50 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.H - Sulfosalts of SnS Archetype
  02.HD -With Tl
 
02.HD.50 Bernardite Tl(As,Sb)5S8 P 21/c 2/m
 

Other Bernardite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.75,p1209,1990)
Help on See Also: See Also: Links to other databases for Bernardite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Bernardite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Bernardite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Bernardite Mineral Data :

Ask about Bernardite 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 Espaņol

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

Bernardite

Tl(As,Sb)5S8
Dana No: 03.08.14.02 Strunz No: 02.HD.50
Locality:

 

Notes: