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Miharaite Mineral Data
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General Miharaite Information
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 Chemical Formula: |
Cu4FePbBiS6 |
| Composition: |
Molecular Weight = 918.61 gm |
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Iron 6.08 % Fe |
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Copper 27.67 % Cu |
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Bismuth 22.75 % Bi |
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Lead 22.56 % Pb |
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Sulfur 20.94 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Cu4Fe2+PbBiS6 |
| Environment: |
As disseminations in a hedenbergit-garnet-epidote contact metamorphic deposit. |
| IMA Status: |
Approved IMA 1976 |
| Locality: |
Mihara mine and the Imooka mine, Okayama Prefecture, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
Named after the locality. |
| Name Pronunciation: |
Miharaite + Pronunciation  |
| Synonym: |
ICSD 65082 |
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PDF 33-461 |
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Miharaite Image |
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Images:
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Angelaite Miharaite
Comments: Image of a polished section of the ore (without analyzer): galena (ga) with numerous inclusions miharaÃte (wi) and angelaÃte (an). Pyrite (pi), chalcopyrite (cp). (AsocGeolArgent, v59, no 4).
Location: Angela mine, IS-type mineralization in the district springs, Chubut, Argentina.
Scale: See Image.
© Revista de la Asociación Geológica Argentina |
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Miharaite Crystallography
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| Axial Ratios: |
a:b:c =0.9056:1:0.3229 |
| Cell Dimensions: |
a = 10.854, b = 11.985, c = 3.871, Z = 2; V = 503.56 Den(Calc)= 6.06 |
| Crystal System: |
Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Pb21m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.03(1), 3(0.9), 2.68(0.8), |
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Physical Properties of Miharaite
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| Color: |
Gray. |
| Density: |
6.06 |
| Diaphaneity: |
Opaque |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
4 - Fluorite |
| Luster: |
Metallic |
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Optical Properties of Miharaite
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| RL Anisotrophism: |
Moderate, from grayish blue to pinkish brown. |
| RL Color: |
Pale gray to grayish white. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Miharaite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 480 nm |
26.60 |
30.30 |
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| 548 nm |
30.80 |
31.50 |
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| 589 nm |
31.70 |
32.60 |
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| 657 nm |
32.10 |
34.20 |
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Calculated Relative Intensity Colors of Miharaite in Air
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
320% |
330% |
| R1 |
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| R2 |
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Calculated Properties of Miharaite
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| Electron Density: |
Bulk Density (Electron Density)=5.32 gm/cc
note: Specific Gravity of Miharaite =6.06 gm/cc.
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| Fermion Index: |
Fermion Index = 0.05
Boson Index = 0.95 |
| Photoelectric: |
PEMiharaite = 828.39 barns/electron
U=PEMiharaite x rElectron Density=4,404.67 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Miharaite is Not Radioactive |
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Miharaite Classification
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| Dana Class: |
03.01.05.01 (03)Sulfides - Sulfosalts |
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(03.01)where z/y > 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.01.05)Dana Group |
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03.01.05.01 Miharaite Cu4FePbBiS6 Pb21m mm2 |
| Strunz Class: |
02.LB.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.L - Unclassified Sulfosalts |
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02.LB -With essential Pb |
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02.LB.05 Miharaite Cu4FePbBiS6 Pb21m mm2 |
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Other Miharaite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Miharaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST
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Miharaite
Cu4FePbBiS6
Dana No: 03.01.05.01 Strunz No: 02.LB.05
Locality:
Notes:
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