Akdalaite Mineral Data + 
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- 4.3.2.1 Akdalaite (Al2O3)4·(H2O) P 6122,P 61 6 2 2
- 4.3.2.2 Ferrihydrite Fe2O3·0.5(H2O) P 31c 3 2/m
- 4.3.2.3 IMA2004-051! 5(Al2O3)·H2O P 63mc
- IV/F.09-10 Akdalaite (Al2O3)4·(H2O) P 6122,P 61 6 2 2
- IV/F.09-20 Ferrihydrite Fe2O3·0.5(H2O) P 31c 3 2/m
General Akdalaite Information |
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 Chemical Formula: |
(Al2O3)4·(H2O) | ||
| Composition: |
Molecular Weight = 425.86 gm | ||
| Aluminum 50.69 % Al 95.77 % Al2O3 | |||
| Hydrogen 0.47 % H 4.23 % H2O | |||
| Oxygen 48.84 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
(Al2O3)4·(H2O) | ||
| Environment: |
In a skarn. | ||
| IMA Status: |
Approved IMA 1970 | ||
| Locality: |
Solvech fluorite deposit, Karaganda region, Kazakhstan, Akdala. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the Kazakh name for the locality. | ||
Akdalaite Image | |||
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Images:
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Akdalaite Crystallography |
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| Axial Ratios: |
a:c = 1:1.16317 | ||
| Cell Dimensions: |
a = 12.87, c = 14.97, Z = 11; V = 2,147.38 Den(Calc)= 3.62 | ||
| Crystal System: |
Hexagonal - TrapezohedralH-M Symbol (6 2 2) Space Group: P 6122,P 61 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 1.393(1), 1.418(1), 2.11(1), | ||
Physical Properties of Akdalaite |
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| Cleavage: |
None | ||
| Color: |
White. | ||
| Density: |
3.68 | ||
| Diaphaniety: |
Translucent | ||
| Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | ||
| Habit: |
Tabular - Form dimensions are thin in one direction. | ||
| Hardness: |
7 - Quartz | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Akdalaite |
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| Gladstone-Dale: |
CI meas= 0.049 (Good) - where the CI = (1-KPDmeas/KC) CI calc= 0.033 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2055,KPDmeas= 0.2022,KC= 0.2126 |
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| Optical Data: |
Uniaxial (-), e=1.741, w=1.747, bire=0.0060. | ||
Calculated Properties of Akdalaite |
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| Electron Density: |
relectron=3.57 gm/cc |
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| Fermion Index |
Fermion Index = 0.00023 Boson Index = 0.99977 |
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| Photoelectric: |
PEAkdalaite = 1.49 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Akdalaite is Not Radioactive |
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Akdalaite Classification |
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| Dana Class: |
4.3.2.1 (4)Simple Oxides | ||
| (4.3)with a cation charge of 3+ (A+++2 O3) | |||
| (4.3.2)Dana Group | |||
| Strunz Class: |
IV/F.09-10 IV - Oxides | ||
| IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure | |||
| IV/F.09 - Akdalaite - Ferrihydrite series | |||
Other Akdalaite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Akdalaite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (MinSocAm) 8 - Handbook of Mineralogy (UofA) 9 - MinDAT 10 - MinMax(Deutsch) 11 - MinMax(English) 12 - Mineralienatlas (Deutsch) 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Akdalaite using: Visit our Advertisers for Akdalaite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich 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 The GeoZone Wrights Rock Shop Translate Akdalaite Mineral Data : Ask about Akdalaite here : Print or Cut-and-Paste your Akdalaite Specimen Label here :
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