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Bohdanowiczite Mineral Data
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General Bohdanowiczite Information
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 Chemical Formula: |
AgBiSe2 |
| Composition: |
Molecular Weight = 474.77 gm |
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Silver 22.72 % Ag |
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Bismuth 44.02 % Bi |
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Selenium 33.26 % Se |
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______ |
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100.00 % |
| Empirical Formula: |
AgBiSe2 |
| Environment: |
In fluorite and quartz in a strongly brecciated zone formed in crystalline limestone adjacent to magnetite-bearing skarns. |
| IMA Status: |
Approved IMA 1967 |
| Locality: |
Kletna deposit, Sudetes Mountains, Poland Link to MinDat.org Location Data. |
| Name Origin: |
Named for Karol Bohdanovicz (1864-1947), Polish economic geologist. |
| Name Pronunciation: |
Bohdanowiczite + Pronunciation  |
| Synonym: |
ICSD 26519 |
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PDF 29-1441 |
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Bohdanowiczite Image |
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Images:
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Bohdanowiczite
Comments: PPL polished section with Se-rich digenite (Se-dig) exsolved from massive bornite (Bn). Note the disseminated grains of bohdanowiczite (Bo) and naumannite surrounding the exsolved digenite.
Location: Kidd Creek Volcanogenic Massive Sulfide deposit, Western Abitibi Subprovince, Timmins, Ontario, Canada.
Scale: Picture Size.
© National Resouces of Canada |
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Bohdanowiczite Crystallography
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| Axial Ratios: |
a:c = 1:4.67311 |
| Cell Dimensions: |
a = 4.2049, c = 19.65, Z = 3; V = 300.89 Den(Calc)= 7.86 |
| Crystal System: |
Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: P 3m1 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.926(1), 2.036(0.8), 2.101(0.8), |
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Physical Properties of Bohdanowiczite
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| Color: |
Lead gray. |
| Density: |
7.87 |
| Diaphaneity: |
Opaque |
| Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
| Hardness: |
3 - Calcite |
| Luster: |
Metallic |
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Optical Properties of Bohdanowiczite
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| RL Anisotrophism: |
Noticeable, distinctly stronger in oil, in yellowish gray tones. |
| RL Color: |
Pale creamy yellow to pink. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Bohdanowiczite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
51.20 |
52.90 |
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| 546 nm |
49.80 |
51.50 |
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| 589 nm |
50.10 |
51.50 |
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| 650 nm |
50.10 |
51.60 |
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Calculated Relative Intensity Colors of Bohdanowiczite in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
| R1 |
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| R2 |
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Calculated Properties of Bohdanowiczite
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| Electron Density: |
Bulk Density (Electron Density)=6.56 gm/cc
note: Specific Gravity of Bohdanowiczite =7.86 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEBohdanowiczite = 939.32 barns/electron
U=PEBohdanowiczite x rElectron Density=6,158.14 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bohdanowiczite is Not Radioactive |
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Bohdanowiczite Classification
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| Dana Class: |
03.07.01.02 (03)Sulfides - Sulfosalts |
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(03.07)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.07.01)Matildite Group |
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03.07.01.01 Matildite AgBiS2 P 3m1 3 2/m |
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03.07.01.02 Bohdanowiczite AgBiSe2 P 3m1 3 2/m |
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03.07.01.03 Volynskite AgBiTe2 P 3m1 3 2/m |
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03.07.01.04 Zlatogorite! CuNiSb2 P 3m1 3 2/m |
| Strunz Class: |
02.JA.20 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.20 Bohdanowiczite AgBiSe2 P 3m1 3 2/m |
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02.JA.20 Matildite AgBiS2 P 3m1 3 2/m |
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02.JA.20 Volynskite AgBiTe2 P 3m1 3 2/m |
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Other Bohdanowiczite 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 Bohdanowiczite :
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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Bohdanowiczite
AgBiSe2
Dana No: 03.07.01.02 Strunz No: 02.JA.20
Locality:
Notes:
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