Schlemaite Mineral Data

Schlemaite Mineral Data
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General Schlemaite Information

Help on Chemical Formula: Chemical Formula: (Cu,[ ])6(Pb,Bi)Se4
Help on Composition: Composition: Molecular Weight = 824.04 gm
   Copper    43.57 %  Cu
   Silver     2.88 %  Ag
   Bismuth   10.14 %  Bi
   Lead       4.02 %  Pb
   Selenium  39.38 %  Se
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: Cu5.65Ag0.22Pb0.16Bi0.4Se4.11
Help on Environment: Environment: Occurs with other selenide minerals in the ore zone at the "tiber" dike, -855-m level, block 5128, main shaft # 371. Close to structural similarity with furutobeite.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Niederschlema-Alberoda vein-type uranium depost at Hartensein, Erzgebirge, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the Schlema-Alberoda ore field in the ancient mining region of Saxony, Germany
Help on Synonym: Synonym: IMA2003-026
 

Schlemaite Image

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

Schlemaite   Clausthalite   Eucairite

Comments: Reflected-light digital-image of the intermixed schlemaite grain in type sample F2, from which the reflectance, crystallographic and crystal-structure data were obtained. (CanMin, v 41, p 1435).
Location: "Tiber" dike, -855-m level, block 5128, main shaft # 371, Niederschlema-Alberoda vein-type uranium depost at Hartensein, Erzgebirge, Germany. Scale: See Picture.
© Canadian Mineralogist

Schlemaite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =2.3251:1:2.5008
Help on Cell Dimensions: Cell Dimensions: a = 9.5341, b = 4.1004, c = 10.2546, Z = 2; beta = 100.066° V = 394.72 Den(Calc)= 6.93
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.132(1)(112), 3.189(1)(012), 2.058(0.8)(020),2.601(0.7)(113), 2.151(0.6)(014), 1.909(0.5)(314), 2.505(0.5)(311),
Click Here for Large Schlemaite Structure Window Crystal Structure:

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Forster H J , Cooper M A , Roberts A C , Stanley C J , Criddle A J , Hawthorne F C , Laflamme J H G , Tischendorf G , The Canadian Mineralogist , 41 (2003) p.1433-1444

 

Physical Properties of Schlemaite

Help on Cleavage: Cleavage: None
Help on Color: Color: Black, Silvery gray.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Intergrown Crystals - Occurs as intergrown crystalline aggregates
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Metallic
Help on Streak: Streak: black
 

Optical Properties of Schlemaite

Help on RL Anisotrophism: RL Anisotrophism: Very weak.
Help on RL Bireflectance: RL Bireflectance: Very weak.
Help on RL Color: RL Color: Gray with no internal reflections.
Help on RL Pleochroism: RL Pleochroism: None.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Schlemaite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   35.30   36.20 
   
 420 nm   36.10   37.10 
 440 nm   36.30   37.65 
 460 nm   36.60   38.00 
 470 nm   36.60   38.10 
 480 nm   36.60   38.10 
 500 nm   36.50   38.10 
 520 nm   36.40   38.10 
 540 nm   36.50   38.10 
 546 nm   36.45   38.10 
 560 nm   36.40   38.20 
 580 nm   36.55   38.20 
 589 nm   36.60   38.30 
 600 nm   36.70   38.35 
 620 nm   36.70   38.40 
 640 nm   36.70   38.50 
 650 nm   36.60   38.50 
 660 nm   36.60   38.40 
 680 nm   36.70   38.40 
 700 nm   36.40   38.50 
Standardized Intensity (100%) Reflection Spectra of Schlemaite in Oil
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   20.60   21.70 
   
 420 nm   20.90   22.30 
 440 nm   21.10   22.70 
 460 nm   21.10   23.00 
 470 nm   21.10   23.00 
 480 nm   21.05   23.10 
 500 nm   20.80   22.90 
 520 nm   20.70   22.80 
 540 nm   20.70   22.80 
 546 nm   20.70   22.80 
 560 nm   20.70   22.80 
 580 nm   20.90   22.90 
 589 nm   20.95   22.90 
 600 nm   21.00   23.10 
 620 nm   21.10   23.10 
 640 nm   21.00   23.20 
 650 nm   21.00   23.20 
 660 nm   21.10   23.20 
 680 nm   21.10   23.20 
 700 nm   21.00   23.40 
Calculated Relative Intensity Colors of Schlemaite in Air
Relative
Intensity		    0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 250%
R1                      
R2                      
Calculated Relative Intensity Colors of Schlemaite in Oil
Relative
Intensity		    0%   50% 100% 150% 200% 250% 300% 350% 400% 420%
R1                    
R2                    
 

Calculated Properties of Schlemaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.06 gm/cc
note: Specific Gravity of Schlemaite =6.93 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PESchlemaite = 317.38 barns/electron
U=PESchlemaite x rElectron Density=1,923.08 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Schlemaite is Not Radioactive
 

Schlemaite Classification
Help on Dana Class: Dana Class: 02.16.12.02 (02)Sulfides - Including Selenides and Tellurides
  (02.16)with miscellaneous formulae
  (02.16.12)Dana Group
 
02.16.12.01 Furutobeite (Cu,Ag)6PbS4 Cm ? m
 
02.16.12.02 Schlemaite! (Cu,[])6(Pb,Bi)Se4 P 21/m 2/m
Help on Strunz Class: Strunz Class: 02.BE.25 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1)
  02.BE -With Pb(Bi)
 
02.BE.25 Schlemaite! (Cu,[])6(Pb,Bi)Se4 P 21/m 2/m
 

Other Schlemaite Information
Help on References: References: NAME( CanMin, v 41, p 1433) PHYS. PROP.(CanMin, v 41, p 1433) OPTIC PROP.(CanMin, v 41, p 1433)
Help on See Also: See Also: Links to other databases for Schlemaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Schlemaite

(Cu,[ ])6(Pb,Bi)Se4
Dana No: 02.16.12.02 Strunz No: 02.BE.25
Locality:

 

Notes: