Mineralogy Database

Doyleite Mineral Data

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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 Environment: Environment: A late-stage hydrothermal mineral lining vugs in veins in nepheline syenite.
Help on IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: Mont Saint-Hilaire, Canada Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Canadian physician E.J. Doyle, of Ottawa, Canada, who found the mineral at Mont Saint-Hilaire, Canada.
Help on Name Pronunciation: Name Pronunciation: Doyleite Say DOYLEITE
Help on Synonym: Synonym: ICSD 50581
  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.
© Fabre Minerals

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 - Pinacoidal H-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 Diaphaneity: Diaphaneity: 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= 0.116 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2237,KPDmeas= 0.2237,KC= 0.2531
Ncalc = 1.63
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: Bulk Density (Electron Density)=2.54 gm/cc
note: Specific Gravity of Doyleite =2.48 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0003011748
Boson Index = 0.9996988252
Help on Photoelectric: Photoelectric: PEDoyleite = 1.10 barns/electron
U=PEDoyleite x rElectron Density= 2.80 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: (06)Hydroxides and Oxides Containing Hydroxyl
  (06.03)with (OH)3 or (OH)6 groups
  (06.03.04)Dana Group Doyleite Al(OH)3 P1 1
Help on  Strunz Class: Strunz Class: 04.FE.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FE -Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
04.FE.10 Bayerite Al(OH)3 P 21/a 2/m
04.FE.10 Doyleite Al(OH)3 P1 1
04.FE.10 Gibbsite Al(OH)3 P 21/n 2/m
04.FE.10 Nordstrandite Al(OH)3 P1 1

Other Doyleite Information

Help on References: References: NAME( AntBidBlaNic3) 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 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info

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Dana No: Strunz No: 04.FE.10





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