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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. | ||
| Name Pronunciation: |
Lesukite  |
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| 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 | ||
| Diaphaneity: |
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 Ncalc = 1.46 - 1.53 |
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| Optical Data: |
Isotropic, n=1.53-1.55. | ||
Calculated Properties of Lesukite |
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| Electron Density: |
Bulk Density (Electron Density)=1.92 gm/cc note: Specific Gravity of Lesukite =1.87 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.0002618677 Boson Index = 0.9997381323 |
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| Photoelectric: |
PELesukite = 1.91 barns/electron U=PELesukite x rElectron Density= 3.66 barns/cc. |
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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: |
10.05.01.02 (10)Oxyhalides and Hydroxyhalides | ||
| (10.05)where Am (O,OH)p Xq | |||
| (10.05.01)Dana Group | |||
| Strunz Class: |
03.BD.10 03 - HALIDES | ||
| 03.B - Simple Halides, with H2O | |||
| 03.BD -Simple Halides with H2O and additional OH | |||
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 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Lesukite using: Visit our Advertisers for Lesukite : A Bijoux Google Search for LesukiteAdam's Minerals Google Search for Lesukite Cape Minerals Google Search for Lesukite Dakota Matrix Minerals Google Search for Lesukite Excalibur Mineral Corp. Google Search for Lesukite Exceptional Minerals Google Search for Lesukite John Betts Fine Minerals Search for Lesukite McDougall Minerals Google Search for Lesukite Mineral News Website Link Rock and Mineral Shows Google Search for Lesukite Weinrich Minerals, Inc. Google Search for Lesukite Ask about Lesukite here : Print or Cut-and-Paste your Lesukite Specimen Label here :
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