Mineralogy Database

Sicherite Mineral Data

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General Sicherite Information

Help on Chemical  Formula: Chemical Formula: TlAg2(As,Sb)3S6
Help on Composition: Composition: Molecular Weight = 878.49 gm
   Thallium  23.27 %  Tl
   Silver    24.56 %  Ag
   Antimony  11.09 %  Sb
   Arsenic   19.19 %  As
   Sulfur    21.90 %  S
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: TlAg2As2.25Sb0.8S6
Help on Environment: Environment: Product of late-stage activity of Tl-As-bearing hydrothermal solutions during Alpine metamorphism associated with realgar.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Lengenbach, Binntal, Switzerland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Valentin Sicher (1925-), member of the Lengenbach syndicates who contributed greatly to the specimen recovery efforts.
Help on Synonym: Synonym: IMA1997-051
 

Sicherite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8039:1:0.3684
Help on Cell Dimensions: Cell Dimensions: a = 12.479, b = 15.522, c = 5.719, Z = 4; V = 1,107.76 Den(Calc)= 5.27
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pmnb
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.822(1)(340,331,012), 3.363(0.5)(301), 3.118(0.27)(141),3.21(0.26)(041), 3.29(0.23)(240,311), 2.54(0.17)(341),
Help on Forms: Forms:

Mouse
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RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

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I - Indicies
<space> - Start-Stop Rotation
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M - Menu

Help on Above

Forms: ( 3 0 1) ( 0 0 1) ( 0 3 1) ( 1 4 1) ( 0 1 0)

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Physical Properties of Sicherite

Help on Cleavage: Cleavage: None
Help on Color: Color: Dark gray.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Metallic
Help on Streak: Streak: dark brown-red
 

Optical Properties of Sicherite

Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Sicherite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   33.76   36.15 
   
 410 nm   33.53   35.82 
 420 nm   33.33   35.54 
 430 nm   33.00   35.04 
 440 nm   32.70   34.63 
 450 nm   32.31   34.19 
 460 nm   31.92   33.85 
 470 nm   31.43   33.43 
 480 nm   30.99   33.00 
 490 nm   30.54   32.62 
 500 nm   30.07   32.25 
 510 nm   29.59   31.80 
 520 nm   29.23   31.44 
 530 nm   28.88   31.08 
 540 nm   28.52   30.74 
 550 nm   28.17   30.37 
 560 nm   27.88   30.05 
 570 nm   27.61   29.71 
 580 nm   27.34   29.38 
 590 nm   27.07   29.08 
 600 nm   26.79   28.75 
 610 nm   26.53   28.46 
 620 nm   26.24   28.15 
 630 nm   26.02   27.91 
 640 nm   25.76   27.68 
 650 nm   25.57   27.44 
 660 nm   25.33   27.25 
 670 nm   25.08   26.97 
 680 nm   24.81   26.70 
 690 nm   24.90   26.63 
 700 nm   24.63   26.41 
Standardized Intensity (100%) Reflection Spectra of Sicherite in Oil
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   17.95   21.27 
   
 410 nm   17.73   20.93 
 420 nm   17.67   20.56 
 430 nm   17.45   20.14 
 440 nm   17.09   19.63 
 450 nm   16.77   19.22 
 460 nm   16.44   18.89 
 470 nm   15.98   18.41 
 480 nm   15.65   18.07 
 490 nm   15.22   17.64 
 500 nm   14.81   17.26 
 510 nm   14.49   16.95 
 520 nm   14.18   16.59 
 530 nm   13.89   16.29 
 540 nm   13.62   15.96 
 550 nm   13.39   15.69 
 560 nm   13.13   15.37 
 570 nm   12.94   15.07 
 580 nm   12.76   14.87 
 590 nm   12.52   14.53 
 600 nm   12.30   14.34 
 610 nm   12.14   14.07 
 620 nm   11.90   13.84 
 630 nm   11.73   13.60 
 640 nm   11.54   13.43 
 650 nm   11.36   13.17 
 660 nm   11.16   12.93 
 670 nm   11.09   12.88 
 680 nm   11.08   12.73 
 690 nm   10.96   12.64 
 700 nm   10.89   12.53 
Calculated Relative Intensity Colors of Sicherite in Air
Relative
Intensity
   0%   40%   80% 100% 120% 160% 200% 240% 280% 320% 330%
R1                      
R2                      
Calculated Relative Intensity Colors of Sicherite in Oil
Relative
Intensity
   0%   70% 100% 140% 210% 280% 350% 420% 490% 560% 630% 700%
R1                        
R2                        
 

Calculated Properties of Sicherite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.63 gm/cc
note: Specific Gravity of Sicherite =5.27 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0016425584
Boson Index = 0.9983574416
Help on Photoelectric: Photoelectric: PESicherite = 505.53 barns/electron
U=PESicherite x rElectron Density=2,341.48 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sicherite is Not Radioactive
 

Sicherite Classification

Help on  Dana Class: Dana Class: 03.07.10.04 (03)Sulfides - Sulfosalts
  (03.07)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.07.10)Simonite Group
 
03.07.10.01 Simonite TlHgAs3S6 P 21/n 2/m
 
03.07.10.02 Edenharterite TlPbAs3S6 F dd2 mm2
 
03.07.10.03 Jentschite! TlPbAs2SbS6 P 21/n 2/m
 
03.07.10.04 Sicherite! TlAg2(As,Sb)3S6 Pmnb 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 02.HD.55 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.H - Sulfosalts of SnS Archetype
  02.HD -With Tl
 
02.HD.55 Sicherite! TlAg2(As,Sb)3S6 Pmnb 2/m 2/m 2/m
 

Other Sicherite Information

Help on References: References: NAME( AmMin, Vol 86, p 1087-2001) PHYS. PROP.(AmMin, Vol 86, p 1087-2001)
Help on See Also: See Also: Links to other databases for Sicherite :
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

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

Sicherite

TlAg2(As,Sb)3S6
Dana No: 03.07.10.04 Strunz No: 02.HD.55
Locality:

 

Notes:

 

 
   
 


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