Lesukite Mineral Data + 
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- 10.5.1.1 Cadwaladerite Al(OH)2Cl·4(H2O) None
- 10.5.1.2 Lesukite ! Al2(OH)5Cl·2(H2O) I m3m 4/m 3 2/m
- III/A.13-05 Lesukite Al2(OH)5Cl·2(H2O) I m3m 4/m 3 2/m
- III/A.13-10 Cadwaladerite Al(OH)2Cl·4(H2O) None
- III/A.13-20 Chloraluminite AlCl3·6(H2O) R 3c 3 2/m
- III/A.13-30 Hydromolysite? FeCl3·6(H2O) C 2/m 2/m
General Lesukite Information |
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 Chemical Formula: |
Al2(OH)5Cl·2(H2O) | ||
| Composition: |
Molecular Weight = 210.48 gm | ||
| Aluminum 25.64 % Al 48.44 % Al2O3 | |||
| Hydrogen 4.31 % H 38.52 % H2O | |||
| Chlorine 16.84 % Cl 16.84 % Cl | |||
| - % Cl -3.80 % -O=Cl2 | |||
| Oxygen 53.21 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Al2(OH)5Cl·2(H2O) | ||
| Environment: |
The result of interaction of fumarole gases and volcanic rocks at 50 deg C. | ||
| IMA Status: |
Approved IMA 1997 (Dana # Added) | ||
| Locality: |
The Tolbachik Main Fracture eruption, Kamchatka, Russia. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named after Grigorii Ivanovich Lesuke (1935–1995), technical worker in the Department of Crystallography, University of St. Petersburg, Russia. | ||
| Synonym: |
IMA1996-004 | ||
Lesukite Image | |||
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Images:
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Lesukite Crystallography |
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| Cell Dimensions: |
a = 19.878, Z = 36; V = 7,854.49 Den(Calc)= 1.60 | ||
| Crystal System: |
Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: I m3m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.706(1), 2.446(0.8), 8.11(0.7), | ||
Physical Properties of Lesukite |
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| Color: |
Yellowish orange, Yellowish brown. | ||
| Density: |
1.87 | ||
| Diaphaniety: |
Transparent | ||
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. | ||
| Habit: |
Tabular - Form dimensions are thin in one direction. | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
yellowish orange | ||
Optical Properties of Lesukite |
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| Gladstone-Dale: |
CI meas= -0.015 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.186 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.3375,KPDmeas= 0.2888,KC= 0.2845 |
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| Optical Data: |
Isotropic, n=1.53-1.55. | ||
Calculated Properties of Lesukite |
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| Electron Density: |
relectron=1.92 gm/cc |
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| Fermion Index |
Fermion Index = 0.00026 Boson Index = 0.99974 |
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| Photoelectric: |
PELesukite = 1.91 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Lesukite is Not Radioactive |
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Lesukite Classification |
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| Dana Class: |
10.5.1.2 (10)Oxyhalides and Hydroxyhalides | ||
| (10.5)where Am (O,OH)p Xq | |||
| (10.5.1)Dana Group | |||
| Strunz Class: |
III/A.13-05 III - Halogenides | ||
| III/A - Simple Halogenides, with water Metal : Halogen = 1 : 1 to 1 : 3 | |||
| III/A.13 - Cadwaladerite - Hydromolysite series | |||
Other Lesukite Information |
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| References: |
NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.83,p654,1998) OPTIC PROP.(MinRec) | ||
| See Also: |
Links to other databases for Lesukite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas Search for Lesukite using: Visit our Advertisers for Lesukite : AA Mineral SpecimensB & L Fine Minerals Crystal Vaults Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals Rockshop.cz T G Fine Minerals Wrights Rock Shop Translate Lesukite Mineral Data : Ask about Lesukite here : Print or Cut-and-Paste your Lesukite Specimen Label here :
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