Doyleite Mineral Data
General Doyleite Information
Chemical Formula:
Al(OH)3
Composition:
Molecular Weight = 78.00 gm
Aluminum 34.59 % Al 65.36 % Al2 O3
Hydrogen 3.88 % H 34.64 % H2 O
Oxygen 61.53 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Al(OH)3
Environment:
A late-stage hydrothermal mineral lining vugs in veins in nepheline syenite.
IMA Status:
Approved IMA 1985
Locality:
Mont Saint-Hilaire, Canada Link to MinDat.org Location Data.
Name Origin:
Named for Canadian physician E.J. Doyle, of Ottawa, Canada, who found the mineral at Mont Saint-Hilaire, Canada.
Name Pronunciation:
Doyleite
Synonym:
ICSD 50581
IMA1980-041
PDF 38-376
Doyleite Image
Images:
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
Axial Ratios:
a:b:c =0.9665:1:0.9623
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
Crystal System:
Triclinic - Pinacoidal H-M Symbol ( 1 ) Space Group: P1
X Ray Diffraction:
By Intensity(I/Io ): 4.794(1), 2.36(0.4), 1.972(0.3),
Physical Properties of Doyleite
Cleavage:
{010} Perfect, {100} Distinct
Color:
White, Creamy white, Bluish white.
Density:
2.48
Diaphaneity:
Transparent to Opaque
Hardness:
2.5-3 - Finger Nail-Calcite
Luster:
Vitreous - Pearly
Streak:
white
Optical Properties of Doyleite
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
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
Electron Density:
Bulk Density (Electron Density)=2.54 gm/cc note: Specific Gravity of Doyleite =2.48 gm/cc.
Fermion Index:
Fermion Index = 0.0003011748 Boson Index = 0.9996988252
Photoelectric:
PEDoyleite = 1.10 barns/electronU=PEDoyleite x r Electron Density= 2.80 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Doyleite is Not Radioactive
Doyleite Classification
Dana Class:
06.03.04.01 (06) Hydroxides and Oxides Containing Hydroxyl
(06.03) with (OH)3 or (OH)6 groups
(06.03.04) Dana Group
06.03.04.01 Doyleite Al(OH)3 P1 1
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
References:
NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
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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Doyleite
Al(OH)3
Dana No: 06.03.04.01 Strunz No: 04.FE.10
Locality:
Notes:
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