Vurroite Mineral Data

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


General Vurroite Information

Help on Chemical Formula: Chemical Formula: Pb20Sn2(Bi,As)22S54Cl6
Help on Composition: Composition: Molecular Weight = 9,577.60 gm
   Thallium   0.06 %  Tl
   Tin        1.61 %  Sn
   Bismuth   28.34 %  Bi
   Arsenic    8.39 %  As
   Lead      41.00 %  Pb
   Selenium   0.18 %  Se
   Sulfur    18.32 %  S
   Bromine    0.24 %  Br
   Chlorine   1.85 %  Cl
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: Pb18.95Sn1.3Bi12.99As10.73Tl0.03S54.71Se0.22Cl5Br0.29
Help on Environment: Environment: Assemblage of Pb-Bi sulfosalts encrusting high temperature (400-600 °C) fumaroles. OD (order-disorder) structure F2/d11 and A2/d11.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Rim and inner slope of the La Fossa crater of Vulcano Island, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Filippo Vurro, Professor of Mineralogy at the University of Bari and specialist in the mineralogy and geochemistry of modern volcanic deposits.
Help on Synonym: Synonym: IMA2003-027
 

Vurroite Image

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

Vurroite

Comments: SEM image of a jack-straw aggregate of vurroite crystals. (CanMin, v43:703).
Location: Fumarole (400-600 deg C) Pb-Bi epithermal deposit of La Fossa crater, on Vulcano Island, Italy. Scale: See Image.
© Canadian Mineralogist

Vurroite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.1839:1:0.5993
Help on Cell Dimensions: Cell Dimensions: a = 8.371, b = 45.502, c = 27.273, Z = 4; beta = 98.83° V = 10,265.09 Den(Calc)= 6.20
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.07(1)(18.2.8 ), 3.34(0.8)(822), 2.85(0.8)(16.0.2 ),2.69(0.8)(12.2.6 ), 2.1(0.7)(040), 3.17(0.6)(826), 2.17(0.6)(18.2.2 ), 2.04(0.5)(20.0.12), 3.71(0.45)(12.0.4 ),
Click Here for Large Vurroite 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


Pinto D , Bonaccorsi E , Balic-Zunic T , Makovicky E , American Mineralogist , 93 (2008) p.713-727, The crystal structure of vurroite, Pb20Sn2(Bi,As)22S54Cl6: OD-character,, polytypism, twinning, and modular description, Locality: Vulcano, Aeolian Islands, Italy

 

Physical Properties of Vurroite

Help on Cleavage: Cleavage: Unknown
Help on Color: Color: Silvery gray.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Luster: Luster: Metallic
 

Optical Properties of Vurroite

Help on RL Anisotrophism: RL Anisotrophism: Weak.
Help on RL Bireflectance: RL Bireflectance: None.
Help on RL Color: RL Color: White with no internal reflections.
Help on RL Pleochroism: RL Pleochroism: None.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Vurroite in Air
λ R  ∑ R(λ) 
 470 nm   34.25   
 546 nm   32.95 
 589 nm   32.60 
 650 nm   31.05 
Calculated Relative Intensity Colors of Vurroite in Air
Relative
Intensity		    0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 270% 280%
R                        
 

Calculated Properties of Vurroite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.22 gm/cc
note: Specific Gravity of Vurroite =6.20 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PEVurroite =1,303.82 barns/electron
U=PEVurroite x rElectron Density=6,805.44 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Vurroite is Not Radioactive
 

Vurroite Classification
Help on Dana Class: Dana Class: 03.06.23.01 (03)Sulfides - Sulfosalts
  (03.06)where 2 < z/y < 2.49 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.06.23)Dana Group
 
03.06.23.01 Vurroite! Pb20Sn2(Bi,As)22S54Cl6 C 2/c 2/m
Help on Strunz Class: Strunz Class: 02.JB.65 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.J - Sulfosalts of PbS Archetype
  02.JB -Galena derivatives, with Pb
 
02.JB.65 Vurroite! Pb20Sn2(Bi,As)22S54Cl6 C 2/c 2/m
 

Other Vurroite Information
Help on References: References: NAME( AmMin, v90, p1949) PHYS. PROP.(AmMin, v90,1949 - v93:713) OPTIC PROP.(AmMin, v90, p1949)
Help on See Also: See Also: Links to other databases for Vurroite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Vurroite using:

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

Visit our Advertisers for Vurroite :

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

Ask about Vurroite 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 Vurroite Specimen Label here :

Vurroite

Pb20Sn2(Bi,As)22S54Cl6
Dana No: 03.06.23.01 Strunz No: 02.JB.65
Locality:

 

Notes: