Mineralogy Database

Miharaite Mineral Data

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General Miharaite Information

Help on Chemical  Formula: Chemical Formula: Cu4FePbBiS6
Help on Composition: Composition: Molecular Weight = 918.61 gm
   Iron      6.08 %  Fe
   Copper   27.67 %  Cu
   Bismuth  22.75 %  Bi
   Lead     22.56 %  Pb
   Sulfur   20.94 %  S
           100.00 % 
Help on Empirical Formula: Empirical Formula: Cu4Fe2+PbBiS6
Help on Environment: Environment: As disseminations in a hedenbergit-garnet-epidote contact metamorphic deposit.
Help on IMA Status: IMA Status: Approved IMA 1976
Help on Locality: Locality: Mihara mine and the Imooka mine, Okayama Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the locality.
Help on Name Pronunciation: Name Pronunciation: Miharaite + Pronunciation Say MIHARAITE
Help on Synonym: Synonym: ICSD 65082
  PDF 33-461

Miharaite Image

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

Comments: Image of a polished section of the ore (without analyzer): galena (ga) with numerous inclusions miharaíte (wi) and angelaíte (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

Miharaite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9056:1:0.3229
Help on Cell Dimensions: Cell Dimensions: a = 10.854, b = 11.985, c = 3.871, Z = 2; V = 503.56 Den(Calc)= 6.06
Help on Crystal System: Crystal System: Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Pb21m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.03(1), 3(0.9), 2.68(0.8),

Physical Properties of Miharaite

Help on Color: Color: Gray.
Help on Density: Density: 6.06
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Metallic

Optical Properties of Miharaite

Help on RL Anisotrophism: RL Anisotrophism: Moderate, from grayish blue to pinkish brown.
Help on RL Color: RL Color: Pale gray to grayish white.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Miharaite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 480 nm   26.60   30.30 
 548 nm   30.80   31.50 
 589 nm   31.70   32.60 
 657 nm   32.10   34.20 
Calculated Relative Intensity Colors of Miharaite in Air
   0%   40%   80% 100% 120% 160% 200% 240% 280% 320% 330%

Calculated Properties of Miharaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.32 gm/cc
note: Specific Gravity of Miharaite =6.06 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEMiharaite = 828.39 barns/electron
U=PEMiharaite x rElectron Density=4,404.67 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Miharaite is Not Radioactive

Miharaite Classification

Help on  Dana Class: Dana Class: (03)Sulfides - Sulfosalts
  (03.01)where z/y > 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.01.05)Dana Group Miharaite Cu4FePbBiS6 Pb21m mm2
Help on  Strunz Class: Strunz Class: 02.LB.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.L - Unclassified Sulfosalts
  02.LB -With essential Pb
02.LB.05 Miharaite Cu4FePbBiS6 Pb21m mm2

Other Miharaite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: 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

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Dana No: Strunz No: 02.LB.05





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