Doyleite Mineral Data + Say DOYLEITE


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General Doyleite Information

Help on Chemical  Formula: Chemical Formula: Al(OH)3
Help on Composition: Composition: Molecular Weight = 78.00 gm
   Aluminum  34.59 %  Al   65.36 % Al2O3
   Hydrogen   3.88 %  H    34.64 % H2O
   Oxygen    61.53 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al(OH)3
Help on IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Synonym: Synonym: ICSD 50581
  IMA1980-041
  PDF 38-376
 

Doyleite Image

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Doyleite   Gibbsite

Comments: Botryoidal spheres of doyleite growing along with its dimorph gibbsite. Analysis shows that doyleite dominates the mix. There are also minor canary yellow phlogopite crystals.
Location: Baoshan, Yunnan, China. Scale: 8 x 6.5 x 1.9 cm.
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Doyleite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9665:1:0.9623
Help on Cell Dimensions: Cell Dimensions: a = 5.002, b = 5.175, c = 4.98, Z = 2; alpha = 97.5°, beta = 118.6°, gamma = 104.74° V = 108.52 Den(Calc)= 2.39
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.794(1), 2.36(0.4), 1.972(0.3),
 

Physical Properties of Doyleite

Help on Cleavage: Cleavage: [010] Perfect, [100] Distinct
Help on Color: Color: White, Creamy white, Bluish white.
Help on Density: Density: 2.48
Help on Diaphaniety: Diaphaniety: Transparent to Opaque
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Doyleite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.116 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.083 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2321,KPDmeas= 0.2237,KC= 0.2531
Help on Optical Data: Optical Data: Biaxial (+), a=1.545, b=1.553, g=1.566, bire=0.0210, 2V(Calc)=78, 2V(Meas)=77.
 

Calculated Properties of Doyleite

Help on Electron Density: Electron Density:

relectron=2.45 gm/cc
note: rDoyleite =2.39 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.0003
Boson Index = 0.9997
Help on Photoelectric: Photoelectric:

PEDoyleite = 1.10 barns/electron
U=PEDoyleite x relectron= 2.69 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Doyleite is Not Radioactive

 

Doyleite Classification

Help on  Dana Class: Dana Class: 6.3.4.1 (6)Hydroxides and Oxides Containing Hydroxyl
  (6.3)with (OH)3 or (OH)6 groups
  (6.3.4)Dana Group
 
6.3.4.1 Doyleite Al(OH)3 P1 1
Help on  Strunz Class: Strunz Class: IV/F.02-40 IV - Oxides
  IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure
  IV/F.02 - Gibbsite - Doyleite series
 
IV/F.02-10 Gibbsite Al(OH)3 P 21/n 2/m
 
IV/F.02-20 Bayerite Al(OH)3 P 21/a 2/m
 
IV/F.02-30 Nordstrandite Al(OH)3 P1 1
 
IV/F.02-40 Doyleite Al(OH)3 P1 1
 

Other Doyleite Information

Help on References: References: 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 Doyleite :
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 -Athena 5 - EUROmin Project 6 -Google Images 7 -Google Scholar 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 -École des Mines de Paris

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

Doyleite

Al(OH)3
Dana No: 6.3.4.1 Strunz No: IV/F.02-40
Locality:

 

Notes:

 

 
   
 
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