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Hodrushite Mineral Data
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General Hodrushite Information
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 Chemical Formula: |
Cu8Bi12S22 |
| Composition: |
Molecular Weight = 3,721.58 gm |
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Copper 13.66 % Cu |
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Bismuth 67.38 % Bi |
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Sulfur 18.96 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Cu8Bi12S22 |
| Environment: |
In polymetallic ore deposits of subvolcanic type, in a quartz vein system developed in propylitized pryoxenite andesite. |
| IMA Status: |
Approved IMA 1970 |
| Locality: |
Hodursa, Czechoslovakia. Link to MinDat.org Location Data. |
| Name Origin: |
Named after its locality. |
| Name Pronunciation: |
Hodrushite + Pronunciation  |
| Synonym: |
ICSD 24462 |
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PDF 25-267 |
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Hodrushite Image |
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Images:
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Cupromakovickyite Hodrushite
Comments: Kup?cÃkite (ku) and hodrushite (ho) partly replaced by bismuthinite derivative (bd56) with relict lamellae of low-Cu (4P) and cupromakovickyite [4P(Cu,Pb)]. (CanMin, 41:1165).
Location: Scheelite deposit of Felbertal, Austria.
Scale: Scale Bar 100 µm.
© Canadian Mineralogist |
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Hodrushite Crystallography
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| Axial Ratios: |
a:b:c =6.9236:1:4.4732 |
| Cell Dimensions: |
a = 27.21, b = 3.93, c = 17.58, Z = 2; beta = 92.15° V = 1,878.60 Den(Calc)= 6.58 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: A2/m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.102(1), 2.715(0.8), 3.62(0.8), |
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Physical Properties of Hodrushite
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| Cleavage: |
None |
| Color: |
Brown, Brownish bronze, Steel gray. |
| Density: |
6.45 |
| Diaphaneity: |
Opaque |
| Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
| Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
| Hardness: |
4-5 - Fluorite-Apatite |
| Luster: |
Metallic |
| Streak: |
grayish black |
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Optical Properties of Hodrushite
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| RL Anisotrophism: |
Very feeble, in grays. |
| RL Color: |
Creamy with very slight pinkish tint. |
| RL Pleochroism: |
Very weak. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Hodrushite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
36.20 |
39.80 |
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| 420 nm |
36.20 |
40.40 |
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| 440 nm |
36.20 |
41.00 |
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| 460 nm |
36.30 |
41.60 |
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| 480 nm |
36.40 |
42.00 |
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| 500 nm |
36.60 |
42.40 |
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| 520 nm |
36.90 |
42.60 |
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| 540 nm |
37.40 |
42.80 |
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| 560 nm |
37.60 |
43.00 |
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| 580 nm |
37.80 |
43.20 |
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| 600 nm |
37.90 |
43.30 |
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| 620 nm |
38.00 |
43.50 |
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| 640 nm |
38.00 |
43.70 |
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| 660 nm |
38.00 |
43.70 |
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| 680 nm |
37.90 |
43.60 |
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| 700 nm |
37.80 |
43.40 |
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Calculated Relative Intensity Colors of Hodrushite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
240% |
250% |
| R1 |
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| R2 |
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Calculated Properties of Hodrushite
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| Electron Density: |
Bulk Density (Electron Density)=5.59 gm/cc
note: Specific Gravity of Hodrushite =6.58 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0014223504
Boson Index = 0.9985776496 |
| Photoelectric: |
PEHodrushite =1,285.05 barns/electron
U=PEHodrushite x rElectron Density=7,179.69 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hodrushite is Not Radioactive |
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Hodrushite Classification
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| Dana Class: |
03.08.04.01 (03)Sulfides - Sulfosalts |
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(03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.08.04)Dana Group |
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03.08.04.01 Hodrushite Cu8Bi12S22 A2/m 2/m |
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03.08.04.02 Paderaite Cu7((Cu,Ag)0.33Pb1.33Bi11.33)13S22 P 21/m 2/m |
| Strunz Class: |
02.JA.10c 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.J - Sulfosalts of PbS Archetype |
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02.JA -Galena derivatives with little or no Pb |
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02.JA.10c Hodrushite Cu8Bi12S22 A2/m 2/m |
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Other Hodrushite Information
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| References: |
NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Hodrushite :
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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Hodrushite
Cu8Bi12S22
Dana No: 03.08.04.01 Strunz No: 02.JA.10c
Locality:
Notes:
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