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Emilite Mineral Data
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General Emilite Information
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 Chemical Formula: |
Cu2.68Pb2.68Bi5.32S12 |
| Composition: |
Molecular Weight = 2,230.52 gm |
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Copper 7.49 % Cu |
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Bismuth 50.03 % Bi |
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Lead 25.08 % Pb |
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Sulfur 17.39 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Cu2.63Pb2.7Bi5.34S12.1 |
| Environment: |
Metamorphosed scheelite deposit. Member of the bismuthinite-krupkaite-aikinite solid-solution series. |
| IMA Status: |
Approved IMA 2002 (Dana # Added) |
| Locality: |
Felbertal scheelite deposit, Austria. Link to MinDat.org Location Data. |
| Name Origin: |
Presumabley named for Emil Makovicky of the University of Copenhagen. |
| Synonym: |
IMA2001-015 |
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Emilite Image |
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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 |
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Emilite Crystallography
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| Axial Ratios: |
a:b:c =0.0895:1:0.2578 |
| Cell Dimensions: |
a = 4.0285, b = 44.986, c = 11.599, Z = 4; V = 2,102.04 Den(Calc)= 7.05 |
| Crystal System: |
Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: P mc21 |
| 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), |
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Physical Properties of Emilite
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| Cleavage: |
{0kl} Imperfect |
| Color: |
Tin white. |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Uneven - Very brittle fracture producing uneven fragments. |
| Hardness: |
3.5-4 - Copper Penny-Fluorite |
| Luster: |
Metallic |
| Streak: |
grayish black |
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Optical Properties of Emilite
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| RL Anisotrophism: |
Moderate with greenish to grayish rotation tints. |
| RL Bireflectance: |
Very weak, whitish to yellowish tints. |
| RL Color: |
Tin white with no internal reflections. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Emilite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 460 nm |
39.52 |
46.88 |
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| 470 nm |
39.40 |
46.95 |
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| 540 nm |
39.26 |
48.06 |
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| 546 nm |
39.21 |
48.25 |
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| 580 nm |
39.02 |
48.34 |
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| 589 nm |
38.98 |
48.35 |
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| 640 nm |
38.51 |
47.35 |
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| 650 nm |
38.30 |
46.94 |
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Calculated Relative Intensity Colors of Emilite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
230% |
| R1 |
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| R2 |
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Calculated Properties of Emilite
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| Electron Density: |
Bulk Density (Electron Density)=5.91 gm/cc
note: Specific Gravity of Emilite =7.05 gm/cc.
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| Fermion Index: |
Fermion Index = 0.05
Boson Index = 0.95 |
| Photoelectric: |
PEEmilite =1,425.23 barns/electron
U=PEEmilite x rElectron Density=8,419.24 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Emilite is Not Radioactive |
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Emilite Classification
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| Dana Class: |
03.06.22.01 (03)Sulfides - Sulfosalts |
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(03.06)where 2 < z/y < 2.49 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.06.22)Dana Group |
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03.06.22.01 Emilite! Cu2.68Pb2.68Bi5.32S12 P mc21 mm2 |
| Strunz Class: |
02.HB.05a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.H - Sulfosalts of SnS Archetype |
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02.HB -With Cu, Ag, Hg, Fe, Sn and Pb |
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02.HB.05a Aikinite PbCuBiS3 Pbnm 2/m 2/m 2/m |
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02.HB.05a Hammarite Pb2Cu2Bi4S9(?) Pbnm 2/m 2/m 2/m |
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02.HB.05a Gladite PbCuBi5S9 P nma 2/m 2/m 2/m |
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02.HB.05a Friedrichite Pb5Cu5Bi7S18 Pb21m mm2 |
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02.HB.05a Lindstromite Pb3Cu3Bi7S15 Pbnm 2/m 2/m 2/m |
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02.HB.05a Krupkaite PbCuBi3S6 P mc21 mm2 |
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02.HB.05a Pekoite PbCuBi11(S,Se)18 P 21am mm2 |
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02.HB.05a Paarite! Cu1.7Pb1.7Bi6.3S12 Pmcn 2/m 2/m 2/m |
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02.HB.05a Emilite! Cu2.68Pb2.68Bi5.32S12 P mc21 mm2 |
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02.HB.05a Salzburgite! Cu1.6Pb1.6Bi6.4S12 P mc21 mm2 |
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Other Emilite Information
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| References: |
NAME( CanMin, 40:239) PHYS. PROP.(CanMin, 40:239, AmMin, 91:1950) OPTIC PROP.(AmMin, 89:1826) |
| 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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Emilite
Cu2.68Pb2.68Bi5.32S12
Dana No: 03.06.22.01 Strunz No: 02.HB.05a
Locality:
Notes:
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