Akdalaite Mineral Data

Akdalaite Mineral Data
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General Akdalaite Information

Help on Chemical Formula: Chemical Formula: 5(Al2O3)•(H2O)
Help on Composition: Composition: Molecular Weight = 527.82 gm
   Aluminum  51.12 %  Al   96.59 % Al2O3
   Hydrogen   0.38 %  H     3.41 % H2O
   Oxygen    48.50 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (Al2O3)5•(H2O)
Help on Environment: Environment: In a skarn.
Help on IMA Status: IMA Status: Approved IMA 1970
Help on Locality: Locality: Solvech fluorite deposit, Karaganda region, Kazakhstan, Akdala. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the Kazakh name for the locality.
Help on Name Pronunciation: Name Pronunciation: Akdalaite + Pronunciation Say AKDALAITE
Help on Synonym: Synonym: IMA1969-002
  IMA2004-051 - IMA1969-002 (Akdalaite) has priority
 

Akdalaite Image

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Akdalaite

Comments: Crystalline white akdalaite.
Location: Bulla Island, Caspian Sea, Kazakhstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Akdalaite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.58781
Help on Cell Dimensions: Cell Dimensions: a = 5.58, c = 8.86, Z = 1; V = 238.91 Den(Calc)= 3.67
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal PyramidalH-M Symbol (6mm) Space Group: P 63mc
Click Here for Large Akdalaite Structure Window Crystal Structure:

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Demichelis R , Noel Y , Zicovich-Wilson C M , Roetti C , Valenzano L , Dovesi R , Journal of Physics: Conference Series , 117 (2008) p.012013-012013, Ab-initio quantum mechanical study of akdalaite (5Al2O3·H2O):, Structure and vibrational spectrum,, Locality: Theoretical structure

 

Physical Properties of Akdalaite

Help on Cleavage: Cleavage: None
Help on Color: Color: White.
Help on Density: Density: 3.68
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 7 - Quartz
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Akdalaite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.044 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.042 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2027,KPDmeas= 0.2022,KC= 0.2115
Ncalc = 1.78
Help on Optical Data: Optical Data: Uniaxial (-), e=1.741, w=1.747, bire=0.0060.
 

Calculated Properties of Akdalaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.62 gm/cc
note: Specific Gravity of Akdalaite =3.67 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0002333701
Boson Index = 0.9997666299
Help on Photoelectric: Photoelectric: PEAkdalaite = 1.50 barns/electron
U=PEAkdalaite x rElectron Density= 5.42 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Akdalaite is Not Radioactive
 

Akdalaite Classification
Help on Dana Class: Dana Class: 04.03.02.01 (04)Simple Oxides
  (04.03)with a cation charge of 3+ (A+++2 O3)
  (04.03.02)Dana Group
 
04.03.02.01 Akdalaite 5(Al2O3)•(H2O) P 63mc 6mm
 
04.03.02.02 Ferrihydrite Fe2O3•0.5(H2O) P 31c 3 2/m
Help on Strunz Class: Strunz Class: 04.FL.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FL -Hydroxides with H2O ± (OH); sheets of edge-sharing octahedra
 
04.FL.05 Akdalaite 5(Al2O3)•(H2O) P 63mc 6mm
 
04.FL.05 Meixnerite Mg6Al2(OH)18•4(H2O) R 3m 3 2/m
 
04.FL.05 Jamborite (Ni,Ni,Fe)(OH)2(OH,S,(H2O)) Unk Hex
 
04.FL.05 Iowaite Mg4Fe(OH)8OCl•2-4(H2O) R 3m 3 2/m
 
04.FL.05 Muskoxite Mg7Fe4O13•10(H2O) Unk (pseudo HEX-R) Trig
 
04.FL.05 Woodallite! Mg6Cr2(OH)16Cl2•4(H2O) R 3m 3 2/m
 

Other Akdalaite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: 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 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Akdalaite Specimen Label here :

Akdalaite

5(Al2O3)•(H2O)
Dana No: 04.03.02.01 Strunz No: 04.FL.05
Locality:

 

Notes: