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Cannizzarite Mineral Data
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General Cannizzarite Information
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 Chemical Formula: |
Pb4Bi6S13 |
| Composition: |
Molecular Weight = 2,499.54 gm |
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Bismuth 50.16 % Bi |
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Lead 33.16 % Pb |
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Sulfur 16.68 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Pb4Bi6S13 |
| Environment: |
Associated with deep fumarolic activity. |
| IMA Status: |
Valid Species (Pre-IMA) 1925 |
| Locality: |
From Vulcano, in the Lipari Islands, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
For Stanislao Cannizzaro (1826-1910), celebrated chemist, University of Rome, Italy. |
| Synonym: |
ICSD 49716 |
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PDF 9-357 |
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Cannizzarite Image |
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Images:
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Cannizzarite
Comments: Very delicate 2 mm. crystals of dark gray cannizzarite on matrix.
Location: Kudryaviy Volcano, Iturup Island, Kurilian Island Chain, Russia.
Scale: 3.8x3x2.4 cm.
© Richard Dale / Dale Minerals |
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Cannizzarite Crystallography
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| Axial Ratios: |
a:b:c =0.8428:1:3.1591 |
| Cell Dimensions: |
a = 4.13, b = 4.9, c = 15.48, Z = 0.5; beta = 98.56° V = 309.78 Den(Calc)= 6.70 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.82(1), 2.68(0.6), 3.01(0.6), |
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Physical Properties of Cannizzarite
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| Color: |
Light gray, Silver gray. |
| Density: |
6.7 |
| Diaphaneity: |
Opaque |
| Fracture: |
Flexible - Flexible fragments. |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Habit: |
Felted - Occurs as minute crystalling aggregates with the form of felt material. |
| Habit: |
Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape. |
| Hardness: |
2.5 - Finger Nail |
| Luster: |
Metallic |
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Optical Properties of Cannizzarite
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| RL Anisotrophism: |
Strong, from blue to gray. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Cannizzarite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
49.20 |
51.30 |
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| 420 nm |
49.80 |
52.40 |
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| 440 nm |
50.40 |
53.50 |
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| 460 nm |
50.70 |
53.70 |
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| 480 nm |
50.60 |
53.30 |
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| 500 nm |
50.20 |
52.80 |
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| 520 nm |
49.70 |
52.20 |
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| 540 nm |
49.20 |
51.60 |
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| 560 nm |
48.60 |
51.00 |
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| 580 nm |
48.20 |
50.40 |
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| 600 nm |
47.80 |
50.00 |
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| 620 nm |
47.50 |
49.50 |
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| 640 nm |
47.30 |
49.20 |
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| 660 nm |
47.20 |
49.00 |
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| 680 nm |
47.20 |
49.00 |
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| 700 nm |
47.20 |
49.20 |
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Calculated Relative Intensity Colors of Cannizzarite in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
190% |
| R1 |
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| R2 |
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Calculated Properties of Cannizzarite
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| Electron Density: |
Bulk Density (Electron Density)=5.54 gm/cc
note: Specific Gravity of Cannizzarite =6.70 gm/cc.
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| Fermion Index: |
Fermion Index = 0.07
Boson Index = 0.93 |
| Photoelectric: |
PECannizzarite =1,592.03 barns/electron
U=PECannizzarite x rElectron Density=8,825.02 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cannizzarite is Not Radioactive |
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Cannizzarite Classification
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| Dana Class: |
03.06.05.01 (03)Sulfides - Sulfosalts |
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(03.06)where 2 < z/y < 2.49 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.06.05)Dana Group |
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03.06.05.01 Cannizzarite Pb4Bi6S13 C 2/m 2/m |
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03.06.05.02 Wittite Pb3Bi4(S,Se)9 P 2/m 2/m |
| Strunz Class: |
02.JB.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.JB -Galena derivatives, with Pb |
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02.JB.20 Cannizzarite Pb4Bi6S13 C 2/m 2/m |
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02.JB.20 Wittite Pb3Bi4(S,Se)9 P 2/m 2/m |
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Other Cannizzarite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(AntBidBlaNic1) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Cannizzarite :
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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Cannizzarite
Pb4Bi6S13
Dana No: 03.06.05.01 Strunz No: 02.JB.20
Locality:
Notes:
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