|
![Mineralogy Database Mineralogy Database](/images/Hedyphane_Crystal.gif) |
Miharaite Mineral Data
|
|
|
General Miharaite Information
|
Chemical Formula: |
Cu4FePbBiS6 |
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 % |
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 |
|
PDF 33-461 |
|
Miharaite Image |
Images:
|
|
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 |
|
Miharaite Crystallography
|
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), |
|
Physical Properties of Miharaite
|
Color: |
Gray. |
Density: |
6.06 |
Diaphaneity: |
Opaque |
Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
Hardness: |
4 - Fluorite |
Luster: |
Metallic |
|
Optical Properties of Miharaite
|
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 |
![](../images/Reflect_scale_v.gif) |
∑ R1(λ) |
∑ R2(λ) |
480 nm |
26.60 |
30.30 |
![](../images/480nm.BMP)
![](../images/480nm.BMP) |
|
|
548 nm |
30.80 |
31.50 |
![](../images/548nm.BMP)
![](../images/548nm.BMP) |
589 nm |
31.70 |
32.60 |
![](../images/589nm.BMP)
![](../images/589nm.BMP) |
657 nm |
32.10 |
34.20 |
![](../images/657nm.BMP)
![](../images/657nm.BMP) |
Calculated Relative Intensity Colors of Miharaite in Air
Relative Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
320% |
330% |
R1 |
|
|
|
|
|
|
|
|
|
|
|
R2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Calculated Properties of Miharaite
|
Electron Density: |
Bulk Density (Electron Density)=5.32 gm/cc note: Specific Gravity of Miharaite =6.06 gm/cc. |
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. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Miharaite is Not Radioactive |
|
Miharaite Classification
|
Dana Class: |
03.01.05.01 (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 |
|
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 |
|
02.L - Unclassified Sulfosalts |
|
02.LB -With essential Pb |
|
02.LB.05 Miharaite Cu4FePbBiS6 Pb21m mm2 |
|
Other Miharaite Information
|
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
Search for Miharaite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Miharaite :
Ask about Miharaite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Español
Print or Cut-and-Paste your Miharaite Specimen Label here :
Miharaite
Cu4FePbBiS6
Dana No: 03.01.05.01 Strunz No: 02.LB.05
Locality:
Notes:
|
|
|
|
|
|
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.