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Kirkiite Mineral Data
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General Kirkiite Information
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 Chemical Formula: |
Pb10Bi3As3S19 |
| Composition: |
Molecular Weight = 3,532.96 gm |
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Bismuth 17.75 % Bi |
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Arsenic 6.36 % As |
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Lead 58.65 % Pb |
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Sulfur 17.24 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Pb10Bi3As3S19 |
| Environment: |
In a hydrothermal Pb-Zn deposit. |
| IMA Status: |
Approved IMA 1985 |
| Locality: |
In the Aghios Philippos Pb-Zn deposit, near Kirki, Thrace, Greece. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Kirkiite  |
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Kirkiite Crystallography
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| Axial Ratios: |
a:b:c =0.3311:1:0.3384 |
| Cell Dimensions: |
a = 8.621, b = 26.03, c = 8.81, Z = 2; beta = 119.21° V = 1,725.60 Den(Calc)= 6.80 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.26(1), 3.07(0.7), 3.475(0.6), |
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Physical Properties of Kirkiite
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| Color: |
Tin white. |
| Diaphaneity: |
Opaque |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Habit: |
Pseudo Hexagonal - Crystals show a hexagonal outline. |
| Habit: |
Twinning Common - Crystals are usually twinned. |
| Hardness: |
3.5 - Copper Penny |
| Luster: |
Metallic |
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Optical Properties of Kirkiite
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| Optical Data: |
NCalc= 1.21 - from Gladstone-Dale relationship (KC = 0.0303) where Ncalc=Dcalc*KC+1
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| RL Anisotrophism: |
Weak. |
| RL Color: |
White. |
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Calculated Properties of Kirkiite
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| Electron Density: |
Bulk Density (Electron Density)=5.67 gm/cc
note: Specific Gravity of Kirkiite =6.80 gm/cc.
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| Fermion Index: |
Fermion Index = 0.13
Boson Index = 0.87 |
| Photoelectric: |
PEKirkiite =1,429.12 barns/electron
U=PEKirkiite x rElectron Density=8,097.97 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kirkiite is Not Radioactive |
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Kirkiite Classification
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| Dana Class: |
03.04.17.01 (03)Sulfides - Sulfosalts |
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(03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.04.17)Dana Group |
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03.04.17.01 Kirkiite Pb10Bi3As3S19 P 21/m 2/m |
| Strunz Class: |
02.JB.30b 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.30b Kirkiite Pb10Bi3As3S19 P 21/m 2/m |
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Other Kirkiite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Dana8, AmMin 91:1952) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Kirkiite :
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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Print or Cut-and-Paste your Kirkiite Specimen Label here :
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Kirkiite
Pb10Bi3As3S19
Dana No: 03.04.17.01 Strunz No: 02.JB.30b
Locality:
Notes:
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