Mineralogy Database

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

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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 - Pyramidal H-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),

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
   0%   30%   60%   90% 100% 120% 150% 180% 210% 230%

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)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 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 - 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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Dana No: Strunz No: 02.HB.05a





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