|
|
Bohdanowiczite Mineral Data
|
|
|
General Bohdanowiczite Information
|
Chemical Formula: |
AgBiSe2 |
Composition: |
Molecular Weight = 474.77 gm |
|
Silver 22.72 % Ag |
|
Bismuth 44.02 % Bi |
|
Selenium 33.26 % Se |
|
______ |
|
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 |
|
PDF 29-1441 |
|
Bohdanowiczite Image |
Images:
|
|
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 |
|
Bohdanowiczite Crystallography
|
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), |
|
Physical Properties of Bohdanowiczite
|
Color: |
Lead gray. |
Density: |
7.87 |
Diaphaneity: |
Opaque |
Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
Hardness: |
3 - Calcite |
Luster: |
Metallic |
|
Optical Properties of Bohdanowiczite
|
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 |
|
∑ R1(λ) |
∑ R2(λ) |
470 nm |
51.20 |
52.90 |
|
|
|
546 nm |
49.80 |
51.50 |
|
589 nm |
50.10 |
51.50 |
|
650 nm |
50.10 |
51.60 |
|
Calculated Relative Intensity Colors of Bohdanowiczite in Air
Relative Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
R1 |
|
|
|
|
|
|
|
|
|
|
R2 |
|
|
|
|
|
|
|
|
|
|
|
|
Calculated Properties of Bohdanowiczite
|
Electron Density: |
Bulk Density (Electron Density)=6.56 gm/cc note: Specific Gravity of Bohdanowiczite =7.86 gm/cc. |
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. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Bohdanowiczite is Not Radioactive |
|
Bohdanowiczite Classification
|
Dana Class: |
03.07.01.02 (03)Sulfides - Sulfosalts |
|
(03.07)where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
|
(03.07.01)Matildite Group |
|
03.07.01.01 Matildite AgBiS2 P 3m1 3 2/m |
|
03.07.01.02 Bohdanowiczite AgBiSe2 P 3m1 3 2/m |
|
03.07.01.03 Volynskite AgBiTe2 P 3m1 3 2/m |
|
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 |
|
02.J - Sulfosalts of PbS Archetype |
|
02.JA -Galena derivatives with little or no Pb |
|
02.JA.20 Bohdanowiczite AgBiSe2 P 3m1 3 2/m |
|
02.JA.20 Matildite AgBiS2 P 3m1 3 2/m |
|
02.JA.20 Volynskite AgBiTe2 P 3m1 3 2/m |
|
Other Bohdanowiczite Information
|
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
Search for Bohdanowiczite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Bohdanowiczite :
Ask about Bohdanowiczite 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
Espa�ol
Print or Cut-and-Paste your Bohdanowiczite Specimen Label here :
Bohdanowiczite
AgBiSe2
Dana No: 03.07.01.02 Strunz No: 02.JA.20
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.