| Georgbokiite Mineral Data |
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- 34.6.7.1 Chloromenite! Cu9O2(SeO3)4Cl6 I2/m 2/m
- 34.6.7.2 Georgbokiite ! Cu5O2(SeO3)2Cl2 P 21/c 2/m
- IV/J.05-10 Chadwickite! (UO2)H(AsO3) Tetra
- IV/J.05-20 Cafarsite Ca8(Ti,Fe,Fe,Mn)6-7(AsO3)12·4(H2O) P n3 2/m 3
- IV/J.05-50 Georgbokiite Cu5O2(SeO3)2Cl2 P 21/c 2/m
- IV/J.05-55 Chloromenite! Cu9O2(SeO3)4Cl6 I2/m 2/m
- IV/J.05-60 Ilinskite! NaCu5O2(SeO3)2Cl Pbnm 2/m 2/m 2/m
General Georgbokiite Information |
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 Chemical Formula: |
Cu5O2(SeO3)2Cl2 | ||
| Composition: |
Molecular Weight = 674.55 gm | ||
| Copper 47.10 % Cu 53.03 % Cu2O | |||
| Selenium 23.41 % Se 32.90 % SeO2 | |||
| Chlorine 10.51 % Cl 10.51 % Cl | |||
| - % Cl -2.37 % -O=Cl2 | |||
| Oxygen 18.97 % O | |||
| ______ ______ | |||
| 100.00 % 94.07 % = TOTAL OXIDE | |||
| Empirical Formula: |
Cu5O2(SeO3)2Cl2 | ||
| Environment: |
A product of fumarolic activity (Temperature 200 deg. C.). | ||
| IMA Status: |
Approved IMA 1996 (Dana # Added) | ||
| Locality: |
The cone of the South break of the Large Tolbachik fissure eruption (1975-1981), Kamchatka Peninsula, Russia. Link to MinDat.org Location Data. | ||
| Name Origin: |
For Prof. Dr. Georgiy Borisovich Bokii (1909-) for his contributions to crystal chemistry and mineralogy. | ||
| Synonym: |
ICSD 89637 | ||
| IMA1996-015 | |||
| PDF 51-1563 | |||
Search for Georgbokiite Images | |||
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Images:
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Georgbokiite Crystallography |
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| Axial Ratios: |
a:b:c =0.4387:1:0.4049 | ||
| Cell Dimensions: |
a = 6.045, b = 13.778, c = 5.579, Z = 2; beta = 95.76° V = 462.32 Den(Calc)= 4.85 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.99(1), 2.296(0.95), 2.963(0.94),6.88(0.68), 2.566(0.67), 5.511(0.5), | ||
Physical Properties of Georgbokiite |
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| Cleavage: |
[010] Perfect, [100] Very Good | ||
| Color: |
Chestnut brown, Dark brown. | ||
| Diaphaniety: |
Translucent | ||
| Fracture: |
Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite). | ||
| Habit: |
Euhedral Crystals - Occurs as well-formed crystals showing good external form. | ||
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. | ||
| Hardness: |
4 - Fluorite | ||
| Luster: |
Vitreous - Adamantine | ||
| Streak: |
yellowish brown | ||
Optical Properties of Georgbokiite |
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| Gladstone-Dale: |
CI calc= -0.03 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2282,KC= 0.2215 |
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| Optical Data: |
Biaxial (-), a=2.06, b=2.11, g=2.15, bire=0.0900 | ||
Calculated Properties of Georgbokiite |
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| Electron Density: |
relectron=4.47 gm/cc |
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| Fermion Index |
Fermion Index = 0.01788 Boson Index = 0.98212 |
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| Photoelectric: |
PEGeorgbokiite = 40.09 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Georgbokiite is Not Radioactive |
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Georgbokiite Classification |
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| Dana Class: |
34.6.7.2 (34)Selenites - Tellurites - Sulfites | ||
| (34.6)Dana Type | |||
| (34.6.7)Dana Group | |||
| Strunz Class: |
IV/J.05-50 IV - Oxides | ||
| IV/J - Arsenides with [AsO3]3- groups | |||
| IV/J.05 - Asbeckasite - Cafarsite series | |||
Other Georgbokiite Information |
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| References: |
NAME( MinRec V 31, No. 2) PHYS. PROP.(MinRec, V 31, No. 2) OPTIC PROP.(MinRec, V 31, No. 2) | ||
| See Also: |
Links to other databases for Georgbokiite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas Search for Georgbokiite using: Visit our Advertisers for Georgbokiite : Translate Georgbokiite Mineral Data : Ask about Georgbokiite here : Print or Cut-and-Paste your Georgbokiite Specimen Label here :
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