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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Akdalaite using: Visit our Advertisers for Akdalaite : Translate Akdalaite Mineral Data : Ask about Akdalaite here : Print or Cut-and-Paste your Akdalaite Specimen Label here :
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