Emilite Mineral Data

Emilite Mineral Data
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General Emilite Information

Help on Chemical Formula: Chemical Formula: Cu2.68Pb2.68Bi5.32S12
Help on Composition: Composition: Molecular Weight = 2,230.52 gm
   Copper    7.49 %  Cu
   Bismuth  50.03 %  Bi
   Lead     25.08 %  Pb
   Sulfur   17.39 %  S
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Cu2.63Pb2.7Bi5.34S12.1
Help on Environment: Environment: Metamorphosed scheelite deposit. Member of the bismuthinite-krupkaite-aikinite solid-solution series.
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: Felbertal scheelite deposit, Austria. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Presumabley named for Emil Makovicky of the University of Copenhagen.
Help on Synonym: Synonym: IMA2001-015
 

Emilite Image

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

Comments: Polished section epoxy grain mount PPL image of emilite.
Location: Westfeld, Felbertal, Mittersill, Salzburg, Austria. Scale: Picture Size 0.7 mm.
© Bernhard Pracejus

Emilite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.0895:1:0.2578
Help on Cell Dimensions: Cell Dimensions: a = 4.0285, b = 44.986, c = 11.599, Z = 4; V = 2,102.04 Den(Calc)= 7.05
Help on Crystal System: Crystal System: Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P mc21
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.656(1), 2.852(0.95), 3.567(0.81),3.152(0.78), 3.174(0.71), 4.04(0.49),
Click Here for Large Emilite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Balic-Zunic T , Topa D , Makovicky E , The Canadian Mineralogist , 40 (2002) p.239-245, The crystal structure of emilite, Cu10.7Pb10.7Bi21.3S48, the second 45, angstrom derivative of the bismuthinite-aikinite solid-solution series

 

Physical Properties of Emilite

Help on Cleavage: Cleavage: {0kl} Imperfect
Help on Color: Color: Tin white.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Metallic
Help on Streak: Streak: grayish black
 

Optical Properties of Emilite

Help on RL Anisotrophism: RL Anisotrophism: Moderate with greenish to grayish rotation tints.
Help on RL Bireflectance: RL Bireflectance: Very weak, whitish to yellowish tints.
Help on RL Color: RL Color: Tin white with no internal reflections.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Emilite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 460 nm   39.52   46.88 
   
 470 nm   39.40   46.95 
 540 nm   39.26   48.06 
 546 nm   39.21   48.25 
 580 nm   39.02   48.34 
 589 nm   38.98   48.35 
 640 nm   38.51   47.35 
 650 nm   38.30   46.94 
Calculated Relative Intensity Colors of Emilite in Air
Relative
Intensity		    0%   30%   60%   90% 100% 120% 150% 180% 210% 230%
R1                    
R2                    
 

Calculated Properties of Emilite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.91 gm/cc
note: Specific Gravity of Emilite =7.05 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEEmilite =1,425.23 barns/electron
U=PEEmilite x rElectron Density=8,419.24 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Emilite is Not Radioactive
 

Emilite Classification
Help on Dana Class: Dana Class: 03.06.22.01 (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
  (03.06.22)Dana Group
 
03.06.22.01 Emilite! Cu2.68Pb2.68Bi5.32S12 P mc21 mm2
Help on Strunz Class: Strunz Class: 02.HB.05a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.H - Sulfosalts of SnS Archetype
  02.HB -With Cu, Ag, Hg, Fe, Sn and Pb
 
02.HB.05a Aikinite PbCuBiS3 Pbnm 2/m 2/m 2/m
 
02.HB.05a Hammarite Pb2Cu2Bi4S9(?) Pbnm 2/m 2/m 2/m
 
02.HB.05a Gladite PbCuBi5S9 P nma 2/m 2/m 2/m
 
02.HB.05a Friedrichite Pb5Cu5Bi7S18 Pb21m mm2
 
02.HB.05a Lindstromite Pb3Cu3Bi7S15 Pbnm 2/m 2/m 2/m
 
02.HB.05a Krupkaite PbCuBi3S6 P mc21 mm2
 
02.HB.05a Pekoite PbCuBi11(S,Se)18 P 21am mm2
 
02.HB.05a Paarite! Cu1.7Pb1.7Bi6.3S12 Pmcn 2/m 2/m 2/m
 
02.HB.05a Emilite! Cu2.68Pb2.68Bi5.32S12 P mc21 mm2
 
02.HB.05a Salzburgite! Cu1.6Pb1.6Bi6.4S12 P mc21 mm2
 

Other Emilite Information
Help on References: References: NAME( CanMin, 40:239) PHYS. PROP.(CanMin, 40:239, AmMin, 91:1950) OPTIC PROP.(AmMin, 89:1826)
Help on See Also: See Also: Links to other databases for Emilite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - MinDAT
6 - MinMax(Deutsch)
7 - MinMax(English)
8 - Mineralienatlas (Deutsch)
9 - QUT Mineral Atlas
10 - Ruff.Info

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Emilite

Cu2.68Pb2.68Bi5.32S12
Dana No: 03.06.22.01 Strunz No: 02.HB.05a
Locality:

 

Notes: